SECOND AMENDED AND RESTATED CREDIT AGREEMENT dated as of November 5, 2010 among PETROLEUM DEVELOPMENT CORPORATION, as Borrower CERTAIN SUBSIDIARIES OF BORROWER, as Guarantors The Lenders Party Hereto JPMORGAN CHASE BANK, N.A., as Administrative Agent and J.P. MORGAN SECURITIES LLC, as Sole Bookrunner and Co-Lead Arranger and BNP PARIBAS, as Syndication Agent and Co-Lead Arranger $600,000,000 Senior Secured Credit Facility

Exhibit 10.1

EXECUTION VERSION

SECOND AMENDED AND RESTATED CREDIT AGREEMENT

dated as of

November 5, 2010

among

PETROLEUM DEVELOPMENT CORPORATION,
as Borrower

CERTAIN SUBSIDIARIES OF BORROWER,
as Guarantors

The Lenders Party Hereto

JPMORGAN CHASE BANK, N.A.,
as Administrative Agent

and

J.P. MORGAN SECURITIES LLC,
as Sole Bookrunner and Co-Lead Arranger

and

BNP PARIBAS,
as Syndication Agent and Co-Lead Arranger

$600,000,000 Senior Secured Credit Facility

TABLE OF CONTENTS

Article I Definitions			1
Section 1.01. Defined Terms			1
Section 1.02. Types of Loans and Borrowings			28
Section 1.03. Terms Generally			28
Section 1.04. Accounting Terms; GAAP			28
Section 1.05. Oil and Gas Definitions			29
Section 1.06. Time of Day			29
Article II The Credits			29
Section 2.01. Commitments			29
Section 2.02. Termination and Reduction of the Aggregate Commitment			29
Section 2.03. Additional Lenders; Increases in the Aggregate Commitment			30
Section 2.04. Loans and Borrowings			31
Section 2.05. Requests for Borrowings			31
Section 2.06. Letters of Credit			32
Section 2.07. Funding of Borrowings			36
Section 2.08. Interest Elections			37
Section 2.09. Repayment of Loans; Evidence of Debt			38
Section 2.10. Optional Prepayment of Loans			39
Section 2.11. Mandatory Prepayment of Loans			39
Section 2.12. Fees			41
Section 2.13. Interest			42
Section 2.14. Alternate Rate of Interest			42
Section 2.15. Increased Costs			43
Section 2.16. Break Funding Payments			44
Section 2.17. Taxes			44
Section 2.18. Payments Generally; Pro Rata Treatment; Sharing of Set-offs			46
Section 2.19. Mitigation Obligations; Replacement of Lenders			47
Section 2.20. Defaulting Lenders			49

Article III Borrowing Base			50
Section 3.01. Reserve Report; Proposed Borrowing Base			50
Section 3.02. Scheduled Redeterminations of the Borrowing Base; Procedures and Standards			51
Section 3.03. Special Redeterminations			52
Section 3.04. Notice of Redetermination			52
Section 3.05. Additional Reductions in Borrowing Base			52
Article IV Representations and Warranties			52
Section 4.01. Organization; Powers			52
Section 4.02. Authorization; Enforceability			53
Section 4.03. Governmental Approvals; No Conflicts			53
Section 4.04. Financial Condition; No Material Adverse Change			53
Section 4.05. Properties			53
Section 4.06. Litigation and Environmental Matters			54
Section 4.07. Compliance with Laws and Agreements			54
Section 4.08. Investment Company Status			54
Section 4.09. Taxes			55
Section 4.10. ERISA			55
Section 4.11. Disclosure			55
Section 4.12. Labor Matters			55
Section 4.13. Capitalization			55
Section 4.14. Margin Stock			55
Section 4.15. Oil and Gas Interests			56
Section 4.16. Insurance			57
Section 4.17. Solvency			57
Article V Conditions			57
Section 5.01. Effective Date			57
Section 5.02. Each Credit Event			60
Article VI Affirmative Covenants			60
Section 6.01. Financial Statements; Other Information			60
Section 6.02. Notices of Material Events			62
Section 6.03. Existence; Conduct of Business			63
Section 6.04. Payment of Obligations			63
Section 6.05. Maintenance of Properties; Insurance			64
Section 6.06. Books and Records; Inspection Rights			64
Section 6.07. Compliance with Laws			64
Section 6.08. Use of Proceeds and Letters of Credit			64

Section 6.09. Mortgages and Other Security			65
Section 6.10. Title Data			65
Section 6.11. Swap Agreements			66
Section 6.12. Operation of Oil and Gas Interests			66
Section 6.13. Restricted Subsidiaries			66
Section 6.14. Pledged Equity Interests			67
Article VII Negative Covenants			67
Section 7.01. Indebtedness			67
Section 7.02. Liens			69
Section 7.03. Fundamental Changes			70
Section 7.04. Investments, Loans, Advances, Guarantees and Acquisitions			72
Section 7.05. Swap Agreements			74
Section 7.06. Restricted Payments			75
Section 7.07. Transactions with Affiliates			75
Section 7.08. Restrictive Agreements			75
Section 7.09. Disqualified Stock			76
Section 7.10. Amendments to Organizational Documents			76
Section 7.11. Financial Covenants			76
Section 7.12. Sale and Leaseback Transactions and other Off-Balance Sheet Liabilities			77
Section 7.13. Senior Notes Restrictions			77
Section 7.14. Marcellus JV Documents			77
Article VIII Guarantee of Obligations			78
Section 8.01. Guarantee of Payment			78
Section 8.02. Guarantee Absolute			78
Section 8.03. Guarantee Irrevocable			78
Section 8.04. Reinstatement			78
Section 8.05. Subrogation			79
Section 8.06. Subordination			79
Section 8.07. Payments Generally			79
Section 8.08. Setoff			80
Section 8.09. Formalities			80
Section 8.10. Limitations on Guarantee			80
Article IX Events of Default			80
Article X The Administrative Agent			83

Article XI Miscellaneous			85
Section 11.01. Notices			85
Section 11.02. Waivers; Amendments			86
Section 11.03. Expenses; Indemnity; Damage Waiver			87
Section 11.04. Successors and Assigns			89
Section 11.05. Survival			92
Section 11.06. Counterparts; Integration; Effectiveness			92
Section 11.07. Severability			93
Section 11.08. Right of Setoff			93
Section 11.09. GOVERNING LAW; JURISDICTION; CONSENT TO SERVICE OF PROCESS			93
Section 11.10. WAIVER OF JURY TRIAL			94
Section 11.11. Headings			94
Section 11.12. Confidentiality			94
Section 11.13. Interest Rate Limitation			95
Section 11.14. USA PATRIOT Act			95
Section 11.15. Original Credit Agreement			95
Section 11.16. Reaffirmation and Grant of Security Interest			96
Section 11.17. Reallocation of Commitments and Loans			96

EXHIBITS:

Exhibit A — Form of Assignment and Assumption
Exhibit B — Form of Opinion of Counsel for the Borrower
Exhibit C — Form of Counterpart Agreement
Exhibit D — Form of Interest Election Request
Exhibit E — Form of Note
Exhibit F — Form of Lender Certificate

SCHEDULES:

Schedule 1.01 — Existing Letters of Credit
Schedule 2.01 — Applicable Percentages and Commitments
Schedule 4.06 — Disclosed Matters
Schedule 4.13 — Capitalization
Schedule 7.01 — Existing Indebtedness
Schedule 7.02 — Existing Liens
Schedule 7.04 — Existing Investments
Schedule 7.07 — Transactions with Affiliates
Schedule 7.08 — Existing Restrictions

SECOND AMENDED AND RESTATED CREDIT AGREEMENT

This SECOND AMENDED AND RESTATED CREDIT AGREEMENT, dated as of November 5, 2010, among PETROLEUM DEVELOPMENT CORPORATION, a Nevada corporation, as Borrower, CERTAIN SUBSIDIARIES OF BORROWER, as Guarantors, the LENDERS party hereto, JPMORGAN CHASE BANK, N.A., as Administrative Agent and BNP PARIBAS, as Syndication Agent.

RECITALS

WHEREAS, the Borrower, certain Subsidiaries of the Borrower, certain of the Lenders and JPMorgan Chase Bank, N.A., as administrative agent, have entered into that certain Amended and Restated Credit Agreement, dated as of November 4, 2005 (as amended, supplemented or otherwise modified from time to time prior to the Effective Date, the “Original Credit Agreement”), pursuant to which the lenders party thereto agreed to provide the Borrower with a revolving credit facility in the form and upon the terms and conditions set forth therein;

WHEREAS, the Borrower has requested that the Administrative Agent and the Lenders amend and restate the Original Credit Agreement in its entirety, and the Administrative Agent and the Lenders have agreed to do so upon the terms and conditions set forth herein; and

WHEREAS, it is the intent of the parties hereto that this Agreement shall not constitute a novation of the obligations and liabilities existing under the Original Credit Agreement or constitute repayment of any such obligations and liabilities and that this Agreement shall amend and restate the Original Credit Agreement in its entirety.

NOW, THEREFORE, in consideration of the mutual covenants and agreements contained herein, the parties hereto hereby agree that the Original Credit Agreement is hereby amended and restated in its entirety to read as set forth herein:

Article I

Definitions

Section 1.01. Defined Terms. As used in this Agreement, the following terms have the meanings specified below:

“ABR”, when used in reference to any Loan or Borrowing, refers to whether such Loan, or the Loans comprising such Borrowing, are bearing interest at a rate determined by reference to the Alternate Base Rate.

“Acquisition” means, the acquisition by the Borrower or any Restricted Subsidiary, whether by purchase, merger (and, in the case of a merger with any such Person, with such Person being the surviving corporation) or otherwise, of all or substantially all of the Equity Interest of, or the business, property or fixed assets of or business line or unit or a division of, any other Person primarily engaged in the business of producing oil or natural gas or the acquisition by the Borrower or any Restricted Subsidiary of property or assets consisting of Oil and Gas Interests.

“Adjusted LIBO Rate” means, with respect to any Eurodollar Borrowing for any Interest Period, an interest rate per annum (rounded upwards, if necessary, to the next 1/16 of 1%) equal to (a) the LIBO Rate for such Interest Period multiplied by (b) the Statutory Reserve Rate.

“Administrative Agent” means JPMorgan Chase Bank, N.A., in its capacity as contractual representative of the Lenders hereunder pursuant to Article X and not in its individual capacity as a Lender, and any successor agent appointed pursuant to Article X.

“Administrative Questionnaire” means an Administrative Questionnaire in a form supplied by the Administrative Agent.

“Advance Payment Contract” means any contract whereby any Credit Party either (a) receives or becomes entitled to receive (either directly or indirectly) any payment (an “Advance Payment”) to be applied toward payment of the purchase price of Hydrocarbons produced or to be produced from Oil and Gas Interests owned by any Credit Party and which Advance Payment is, or is to be, paid in advance of actual delivery of such production to or for the account of the purchaser regardless of such production, or (b) grants an option or right of refusal to the purchaser to take delivery of such production in lieu of payment, and, in either of the foregoing instances, the Advance Payment is, or is to be, applied as payment in full for such production when sold and delivered or is, or is to be, applied as payment for a portion only of the purchase price thereof or of a percentage or share of such production; provided that inclusion of the standard “take or pay” provision in any gas sales or purchase contract or any other similar contract shall not, in and of itself, constitute such contract as an Advance Payment Contract for the purposes hereof.

“Affiliate” means, with respect to a specified Person, another Person that directly, or indirectly through one or more intermediaries, Controls or is Controlled by or is under common Control with the Person specified.

“Aggregate Commitment” means, at any time, the sum of the Commitments of all of the Lenders at such time, as such amount may be reduced or increased from time to time pursuant to Section 2.02 or Section 2.03; provided that such amount shall not at any time exceed the lesser of (a) the Maximum Facility Amount and (b) the Borrowing Base then in effect. If at any time the Borrowing Base is reduced below the Aggregate Commitment, the Aggregate Commitment shall be reduced automatically to the amount of the Borrowing Base in effect at such time. As of the Effective Date, the Aggregate Commitment is $350,000,000.

“Aggregate Commitment Usage” means, as of any date and for all purposes, the quotient, expressed as a percentage, of (a) the Aggregate Credit Exposure as of such date, divided by (b) the Aggregate Commitment as of such date.

“Aggregate Credit Exposure” means, as of any date of determination, the sum of the Credit Exposure of all of the Lenders as of such date.

“Agreement” means this Credit Agreement, dated as of November 5, 2010, as it may be amended, amended and restated, supplemented or otherwise modified from time to time.

“Allocated Partnership Volumes” means, with respect to each Sponsored Partnership at any time, the volumes of Crude Oil and Natural Gas under any Swap Agreement then in effect allocated by Borrower to the Other Attributed Interests.

“Alternate Base Rate” means, for any day, a rate per annum equal to the greatest of (a) the Prime Rate in effect on such day, (b) the Federal Funds Effective Rate in effect on such day plus one-half of one percent ( ¹/2 of 1%) and (c) the LMIR on such day plus 1.00%. Any change in the Alternate Base Rate due to a change in the Prime Rate, the Federal Funds Effective Rate or the LMIR shall be effective from and including the effective date of such change in the Prime Rate, the Federal Funds Effective Rate or the LMIR, respectively.

“Applicable Percentage” means, with respect to any Lender at any time, the percentage of the Aggregate Commitment represented by such Lender’s Commitment at such time; provided that in the case of Section 2.20 only, when a Defaulting Lender exists, “Applicable Percentage” shall mean the percentage of the Aggregate Commitment (disregarding any Defaulting Lender’s Commitment) represented by such Lender’s Commitment. The initial amount of each Lender’s Applicable Percentage is as set forth on Schedule 2.01. If the Aggregate Commitment has terminated or expired, the Applicable Percentage of any Lender shall be determined based upon the Aggregate Commitment most recently in effect, giving effect to any assignments and to any Lender’s status as a Defaulting Lender at the time of determination.

“Applicable Rate” means, with respect to any ABR Loan or Eurodollar Loan, or with respect to the Unused Commitment Fees payable hereunder, as the case may be, the applicable rate per annum set forth below under the caption “ABR Spread”, “Eurodollar Spread” or “Unused Commitment Fee Rate”, as the case may be, based upon the Borrowing Base Usage applicable on such date:

										Unused
		ABR				Eurodollar				Commitment Fee
Borrowing Base Usage:		Spread				Spread				Rate
Equal to or greater than 90%			2.000	%			3.000	%			0.500	%
Equal to or greater than 75% and less than 90%			1.750	%			2.750	%			0.500	%
Equal to or greater than 50% and less than 75%			1.500	%			2.500	%			0.500	%
Equal to or greater than 25% and less than 50%			1.250	%			2.250	%			0.500	%
Less than 25%			1.000	%			2.000	%			0.500	%

Each change in the Applicable Rate shall apply during the period commencing on the effective date of such change and ending on the date immediately preceding the effective date of the next change.

“Approved Counterparty” means, at any time and from time to time, (a) any Person engaged in the business of writing Swap Agreements for commodity, interest rate or currency risk that is acceptable to the Administrative Agent and has (or the credit support provider of such Person has), at the time Borrower or any Restricted Subsidiary enters into a Swap Agreement with such Person, a long term senior unsecured debt credit rating of BBB+ or better from S&P or Baal or better from Moody’s and (b) any Lender Counterparty.

“Approved Fund” has the meaning assigned to such term in Section 11.04.

“Approved Petroleum Engineer” means Ryder Scott or any other reputable firm of independent petroleum engineers selected by the Borrower and reasonably acceptable to the Administrative Agent and the Required Lenders.

“Assignment and Assumption” means an assignment and assumption entered into by a Lender and an Eligible Assignee, and accepted by the Administrative Agent, in the form of Exhibit A or any other form approved by the Administrative Agent.

“Attributed Interests” means any Oil and Gas Interests indirectly owned by any Credit Party through the ownership of Partnership Interests and attributed to such Credit Party in proportion to such Credit Party’s ownership of such Partnership Interests; provided such Partnership Interests are subject to a first priority security interest in favor of the Administrative Agents, for the benefit of the Secured Parties, as required under Section 6.14.

“Availability Period” means the period from and including the Effective Date to but excluding the earlier of the Maturity Date and the date of termination of the Aggregate Commitment.

“Bankruptcy Event” means, with respect to any Person, such Person becomes the subject of a bankruptcy or insolvency proceeding, or has had a receiver, conservator, trustee, administrator, custodian, assignee for the benefit of creditors or similar Person charged with the reorganization or liquidation of its business appointed for it, or, in the good faith determination of the Administrative Agent, has taken any action in furtherance of, or indicating its consent to, approval of, or acquiescence in, any such proceeding or appointment, provided that a Bankruptcy Event shall not result solely by virtue of any ownership interest, or the acquisition of any ownership interest, in such Person by a Governmental Authority or instrumentality thereof, provided, further, that such ownership interest does not result in or provide such Person with immunity from the jurisdiction of courts within the United States or from the enforcement of judgments or writs of attachment on its assets or permit such Person (or such Governmental Authority or instrumentality) to reject, repudiate, disavow or disaffirm any contracts or agreements made by such Person.

“Board” means the Board of Governors of the Federal Reserve System of the United States of America.

“Borrower” means Petroleum Development Corporation, a Nevada corporation, and its successors and permitted assigns.

“Borrowing” means Loans of the same Type, made, converted or continued on the same date and, in the case of Eurodollar Loans, as to which a single Interest Period is in effect.

“Borrowing Base” means, at any time an amount equal to the amount determined in accordance with Section 3.01, as the same may be redetermined, adjusted or reduced from time to time pursuant to Article III; provided that the Attributed Interests shall not constitute more than twenty-five percent (25%) of the Engineered Value included in the Borrowing Base.

“Borrowing Base Deficiency” means, as of any date, the amount, if any, by which the Aggregate Credit Exposure on such date exceeds the Borrowing Base in effect on such date; provided, that, for purposes of determining the existence and amount of any Borrowing Base Deficiency, obligations under any Letter of Credit will not be deemed to be outstanding to the extent such obligations are secured by cash in the manner contemplated by Section 2.06(j).

“Borrowing Base Properties” means all Direct Interests and Attributed Interests of the Borrower and the Restricted Subsidiaries evaluated by the Lenders for purposes of establishing the Borrowing Base.

“Borrowing Base Usage” means, as of any date and for all purposes, the quotient, expressed as a percentage, of (i) the Aggregate Credit Exposure as of such date, divided by (ii) the Borrowing Base as of such date.

“Borrowing Request” means a request by the Borrower for a Borrowing in accordance with Section 2.05.

“Business Day” means any day that is not a Saturday, Sunday or other day on which commercial banks in Chicago, Illinois or New York, New York are authorized or required by law to remain closed; provided that, when used in connection with a Eurodollar Loan or to determine LMIR, the term “Business Day” shall also exclude any day on which banks are not open for dealings in dollar deposits in the London interbank market.

“Capital Lease Obligations” of any Person means the obligations of such Person to pay rent or other amounts under any lease of (or other arrangement conveying the right to use) real or personal property, or a combination thereof, which obligations are required to be classified and accounted for as capital leases on a balance sheet of such Person under GAAP, and the amount of such obligations shall be the capitalized amount thereof determined in accordance with GAAP.

“Cash Collateral Account” means a deposit account with, and in the name of, the Administrative Agent, for the benefit of the Lenders, established and maintained for the deposit of cash collateral required under or in connection with this Agreement and the other Loan Documents.

“Cash Management Obligations” means, with respect to any Credit Party, any obligations of such Credit Party owed to any Lender (or any Affiliate of any Lender) in respect of treasury management arrangements, depositary or other cash management services, including commercial credit card and merchant card services.

“Change in Law” means (a) the adoption of any law, rule or regulation after the date of this Agreement, (b) any change in any law, rule or regulation or in the interpretation or application thereof by any Governmental Authority after the date of this Agreement or (c) compliance by any Lender or the Issuing Bank (or, for purposes of Section 2.15(b), by any lending office of such Lender or by such Lender’s or the Issuing Bank’s holding company, if any) with any request, guideline or directive (whether or not having the force of law) of any Governmental Authority made or issued after the date of this Agreement.

“Change of Control” means (a) the acquisition of ownership, directly or indirectly, beneficially or of record, by any Person or group (within the meaning of the Securities Exchange Act of 1934 and the rules of the Securities and Exchange Commission thereunder as in effect on the date hereof), of Equity Interests representing more than 35% of the aggregate ordinary voting power represented by the issued and outstanding Equity Interests of the Borrower; (b) occupation of a majority of the seats (other than vacant seats) on the board of directors of the Borrower by Persons who were neither (i) nominated by the board of directors of the Borrower nor (ii) appointed by directors so nominated; (c) the acquisition of direct or indirect Control of the Borrower by any Person or group; or (d) the occurrence of a “Change of Control” as such term is defined in the Indenture.

“Charges” has the meaning assigned to such term in Section 11.13.

“Collateral” means all assets, whether now owned or hereafter acquired by any Borrower or any other Credit Party, in which a Lien is granted or purported to be granted to any Secured Party as security for any Obligation.

“Code” means the Internal Revenue Code of 1986, as amended from time to time.

“Co-Documentation Agent” mean, so long as each such Person is a Lender, each Person identified as such on Schedule 2.01.

“Co-Lead Arranger” means each of J.P. Morgan Securities LLC and BNP Paribas, in its respective capacity as a co-lead arranger.

“Commitment” means, with respect to each Lender, the commitment of such Lender to make Loans and to acquire participations in Letters of Credit hereunder, in an aggregate principal amount at any one time outstanding not to exceed the amount set forth opposite such Lender’s name on Schedule 2.01, or in the Assignment and Assumption or Lender Certificate pursuant to which such Lender shall have assumed or agreed to provide its Commitment, as applicable, as such commitment may be (a) reduced from time to time pursuant to Section 2.02, (b) increased from time to time as a result of such Lender delivering a Lender Certificate pursuant to Section 2.03, and (c) reduced or increased from time to time pursuant to assignments by or to such Lender pursuant to Section 11.04; provided that any Lender’s Commitment shall not at any time exceed the lesser of (a) such Lender’s Applicable Percentage of the Maximum Facility Amount and (b) such Lender’s Applicable Percentage of the Borrowing Base then in effect. If at any time such Lender’s Applicable Percentage of the Borrowing Base then in effect is less than its Commitment, such Lender’s Commitment shall be reduced automatically to the amount of such Lender’s Applicable Percentage of the Borrowing Base then in effect.

“Consolidated Current Assets” means, as of any date of determination, the total of (a) the consolidated current assets of the Borrower and the Restricted Subsidiaries determined in accordance with GAAP as of such date and calculated on a combined basis, plus, all Unused Commitments as of such date, less (b) any non-cash assets required to be included in consolidated current assets of the Borrower and the Restricted Subsidiaries as a result of the application of FASB Statement 133 as of such date, less (c) non-cash assets consisting of amounts due from Sponsored Partnerships arising from non-cash obligations excluded from Consolidated Current Liabilities pursuant to clause (d) of the definition thereof.

“Consolidated Current Liabilities” means, as of any date of determination, the total of (a) consolidated current liabilities of the Borrower and the Restricted Subsidiaries, as determined in accordance with GAAP as of such date and calculated on a combined basis, less (b) current maturities of the Loans, less (c) any non-cash obligations required to be included in consolidated current liabilities of the Borrower and the Restricted Subsidiaries as a result of the application of FASB Statement 133 as of such date, less (d) non-cash obligations consisting of amounts due to Sponsored Partnerships arising from non-cash assets excluded from Consolidated Current Assets pursuant to clause (c) of the definition thereof.

“Consolidated Current Ratio” means, as of any date of determination, the ratio of Consolidated Current Assets to Consolidated Current Liabilities as of such date.

“Consolidated EBITDAX” means, with respect to the Borrower and its Restricted Subsidiaries for any period, Consolidated Net Income for such period; plus without duplication and to the extent deducted in the calculation of Consolidated Net Income for such period, the sum of (a) income or franchise Taxes paid or accrued; (b) Consolidated Net Interest Expense; (c) amortization, depletion and depreciation expense; (d) any non-cash losses or charges on any Swap Agreement resulting from the requirements of FASB Statement 133 for that period; (e) oil and gas exploration expenses (including all drilling, completion, geological and geophysical costs) for such period; (f) losses from Dispositions of assets (other than Hydrocarbons produced in the ordinary course of business) and other extraordinary or non-recurring losses; and (g) other non-cash charges (excluding accruals for cash expenses made in the ordinary course of business); minus, to the extent included in the calculation of Consolidated Net Income, (h) the sum of (i) any non-cash gains on any Swap Agreements resulting from the requirements of FASB Statement 133 for that period; (ii) extraordinary or non-recurring gains (including the Marcellus JV Withdrawal); (iii) gains from Dispositions of assets (other than Hydrocarbons produced in the ordinary course of business); and (iv) other non-cash gains; provided that, with respect to the determination of Borrower’s compliance with the Consolidated Leverage Ratio set forth in Section 7.11(b) for any period, Consolidated EBITDAX shall be adjusted to give effect, on a pro forma basis and consistent with GAAP, to any Acquisitions or Dispositions made during such period as if such Acquisition or Disposition, as the case may be, was made at the beginning of such period.

“Consolidated Funded Indebtedness” means, as of any date, without duplication, Indebtedness of the Borrower and its Restricted Subsidiaries of the type described in clauses (a), (b), (c), (d), (e), (f), (g) or (h) of the definition of Indebtedness.

“Consolidated Leverage Ratio” has the meaning assigned to such term in Section 7.11(b).

“Consolidated Net Income” means for any period, the consolidated net income (or loss) of the Borrower and its Restricted Subsidiaries, as applicable, determined on a consolidated basis in accordance with GAAP; provided that there shall be excluded (a) the income (or loss) of any Person accrued prior to the date it becomes a Restricted Subsidiary of the Borrower, or is merged into or consolidated with the Borrower or any of its Restricted Subsidiaries, as applicable, (b) the undistributed earnings of any Restricted Subsidiary of the Borrower, to the extent that the declaration or payment of dividends or similar distributions by such Restricted Subsidiary is not at the time permitted by the terms of any contractual obligation (other than under any Loan Document) or by any law applicable to such Restricted Subsidiary and (c) the income (or loss) of any Person in which any other Person (other than the Borrower or any of its Restricted Subsidiaries) has an Equity Interest, except to the extent of the amount of dividends or other distributions actually paid in cash to the Borrower or any of its Restricted Subsidiaries during such period.

“Consolidated Net Interest Expense” means, for any period, the sum of aggregate interest expense and capitalized interest of the Borrower and the Restricted Subsidiaries determined on a consolidated basis for such period in accordance with GAAP.

“Consolidated Subsidiaries” means, for any Person, any subsidiary or other entity the accounts of which would be consolidated with those of such Person in its consolidated financial statements in accordance with GAAP.

“Control” means the possession, directly or indirectly, of the power to direct or cause the direction of the management or policies of a Person, whether through the ability to exercise voting power, by contract or otherwise. “Controlling” and “Controlled” have meanings correlative thereto.

“Counterpart Agreement” means a Counterpart Agreement substantially in the form of Exhibit C delivered by a Guarantor pursuant to Section 6.13.

“Credit Exposure” means, with respect to any Lender at any time, the sum of the outstanding principal amount of such Lender’s Loans and its LC Exposure at such time.

“Credit Parties” means collectively, Borrower, and each Guarantor and each individually, a “Credit Party”.

“Crude Oil” means all crude oil and condensate.

“Default” means any event or condition which constitutes an Event of Default or which upon notice, lapse of time or both would, unless cured or waived, become an Event of Default.

“Defaulting Lender” means any Lender that (a) has failed, within two (2) Business Days of the date required to be funded or paid, to (i) fund any portion of its Loans, (ii) fund any portion of its participations in Letters of Credit or (iii) pay over to the Administrative Agent, the Issuing Bank or any Lender any other amount required to be paid by it hereunder, unless, in the case of clauses (i) and (iii) above (as to clause (iii) as a result of a good faith dispute only), such Lender notifies the Administrative Agent in writing that such failure is the result of such Lender’s good faith determination that a condition precedent to funding (specifically

identified and including the particular default, if any) has not been satisfied, (b) has notified the Borrower, the Administrative Agent, the Issuing Bank or any Lender in writing, or has made a public statement to the effect, that it does not intend or expect to comply with any of its funding obligations under this Agreement (unless such writing or public statement indicates that such position is based on such Lender’s good faith determination that a condition precedent (specifically identified and including the particular default, if any) to funding a loan under this Agreement cannot be satisfied) or generally under other agreements in which it commits to extend credit, (c) has failed, within three (3) Business Days after request by the Administrative Agent or the Issuing Bank, acting in good faith, to provide a certification in writing from an authorized officer of such Lender that it will comply with its obligations to fund prospective Loans and participations in then outstanding Letters of Credit under this Agreement, provided that such Lender shall cease to be a Defaulting Lender pursuant to this clause (c) upon receipt by the Administrative Agent or the Issuing Bank of such certification in form and substance satisfactory to it and the Administrative Agent, or (d) has become the subject of a Bankruptcy Event.

“Direct Interests” means any Oil and Gas Interests directly owned by any Credit Party.

“Disclosed Matters” means the actions, suits and proceedings and the environmental matters disclosed in Schedule 4.06.

“Disposition” or “Dispose” means the sale, transfer, license, lease, exchange or other disposition (including any sale and leaseback transaction) of any property by any Person, including any sale, assignment, transfer or other disposal, with or without recourse, of any notes or accounts receivable or any rights and claims associated therewith.

“Disqualified Stock” means any Equity Interest which, by its terms (or by the terms of any security into which it is convertible or for which it is exchangeable), or upon the happening of any event, matures or is mandatorily redeemable, pursuant to a sinking fund obligation or otherwise, or is redeemable at the sole option of the holder thereof, in whole or in part, on or prior to the Maturity Date.

“Dollars” or “$” refers to lawful money of the United States of America.

“Domestic Subsidiary” means, with respect to any Person, a subsidiary of such Person that is incorporated or formed under the laws of the United States of America, any state thereof or the District of Columbia.

“Effective Date” means the date on which the conditions specified in Section 5.01 are satisfied (or waived in accordance with Section 11.02).

“Eligible Assignee” means any Person that qualifies as an assignee pursuant to Section 11.04(b)(i); provided that, notwithstanding the foregoing, “Eligible Assignee” shall not include the Borrower or any of the Borrower’s Affiliates or Subsidiaries.

“Engineered Value” means, the value attributed to the Borrowing Base Properties for purposes of the most recent Redetermination of the Borrowing Base pursuant to Article III (or for purposes of determining the Initial Borrowing Base in the event no such Redetermination has occurred), based upon the discounted present value of the estimated net cash flow to be realized from the production of Hydrocarbons from the Direct Interests and the Attributed Interests as set forth in the Reserve Report.

“Environmental Laws” means all laws, rules, regulations, codes, ordinances, orders, decrees, judgments, injunctions, notices or binding agreements issued, promulgated or entered into by any Governmental Authority, relating in any way to the environment, preservation or reclamation of natural resources, or the management, release or threatened release of any Hazardous Material.

“Environmental Liability” means any liability, contingent or otherwise (including any liability for damages, costs of environmental remediation, fines, penalties or indemnities), of any Credit Party directly or indirectly resulting from or based upon (a) violation of any Environmental Law, (b) the generation, use, handling, transportation, storage, treatment or disposal of any Hazardous Materials, (c) exposure to any Hazardous Materials, (d) the release or threatened release of any Hazardous Materials into the environment or (e) any contract, agreement or other consensual arrangement pursuant to which liability is assumed or imposed with respect to any of the foregoing.

“Equity Interests” means shares of capital stock, partnership interests, membership interests in a limited liability company, beneficial interests in a trust or other equity ownership interests in a Person, and any warrants, options or other rights entitling the holder thereof to purchase or acquire any such equity interest.

“ERISA” means the Employee Retirement Income Security Act of 1974, as amended from time to time.

“ERISA Affiliate” means any trade or business (whether or not incorporated) that, together with any Credit Party, is treated as a single employer under Section 414(b) or (c) of the Code or, solely for purposes of Section 302 of ERISA and Section 412 of the Code, is treated as a single employer under Section 414 of the Code.

“ERISA Event” means (a) any “reportable event”, as defined in Section 4043 of ERISA or the regulations issued thereunder with respect to a Plan (other than an event for which the 30-day notice period is waived); (b) the existence with respect to any Plan of an “accumulated funding deficiency” (as defined in Section 412 of the Code or Section 302 of ERISA), whether or not waived; (c) the filing pursuant to Section 412(d) of the Code or Section 303(d) of ERISA of an application for a waiver of the minimum funding standard with respect to any Plan; (d) the incurrence by any Credit Party or any of its ERISA Affiliates of any liability under Title IV of ERISA with respect to the termination of any Plan; (e) the receipt by any Credit Party or any ERISA Affiliate from the PBGC or a plan administrator of any notice relating to an intention to terminate any Plan or Plans or to appoint a trustee to administer any Plan; (f) the incurrence by any Credit Party or any of its ERISA Affiliates of any liability with respect to the withdrawal or partial withdrawal from any Plan or Multiemployer Plan; or (g) the receipt by any Credit Party or any ERISA Affiliate of any notice, or the receipt by any Multiemployer Plan from any Credit Party or any ERISA Affiliate of any notice, concerning the imposition of Withdrawal Liability or a determination that a Multiemployer Plan is, or is expected to be, insolvent or in reorganization, within the meaning of Title IV of ERISA.

“Eurodollar”, when used in reference to any Loan or Borrowing, refers to whether such Loan, or the Loans comprising such Borrowing, are bearing interest at a rate determined by reference to the Adjusted LIBO Rate.

“Event of Default” has the meaning assigned to such term in Article IX.

“Excluded Hedges” means, collectively, Swap Agreements that (a) are basis differential only swaps for volumes of Natural Gas included under other Swap Agreements permitted by Section 7.05(a), (b) are a hedge of volumes of Crude Oil or Natural Gas by means of a price “floor” for which there exists no deferred obligation to pay the related premium or other purchase price or the only deferred obligation is to either pay the premium or other purchase price on each settlement date so long as such settlement date occurs at least monthly, or pay the financing for such premium or other purchase price, or (c) for purposes of determining compliance with clauses (A)(ii) and (B)(ii) of Section 7.05(a) only, are volumes of Crude Oil and Natural Gas included in Allocated Partnership Volumes.

“Excluded Taxes” means, with respect to the Administrative Agent, any Lender, the Issuing Bank or any other recipient of any payment to be made by or on account of any obligation of the Borrower hereunder, (a) income or franchise taxes imposed on (or measured by) its net income by the United States of America, or by the jurisdiction under the laws of which such recipient is organized or in which its principal office is located or, in the case of any Lender, in which its applicable lending office is located, (b) any branch profits taxes imposed by the United States of America or any similar tax imposed by any other jurisdiction in which the Borrower is located and (c) in the case of a Foreign Lender (other than an assignee pursuant to a request by the Borrower under Section 2.19(b)), any withholding tax that is imposed on amounts payable to such Foreign Lender at the time such Foreign Lender becomes a party to this Agreement (or designates a new lending office) or is attributable to such Foreign Lender’s failure to comply with Section 2.17(e), except to the extent that such Foreign Lender (or its assignor, if any) was entitled, at the time of designation of a new lending office (or assignment), to receive additional amounts from the Borrower with respect to such withholding tax pursuant to Section 2.17(a).

“Existing Letters of Credit” means the letters of credit issued under the Original Credit Agreement and set forth on the attached Schedule 1.01.

“Existing Swap Agreements” means any Swap Agreements entered into between any Credit Party and any Lender Counterparty (including any Lender Counterparty under and as defined in the Original Credit Agreement) prior to the Effective Date and in effect on the Effective Date.

“FASB” means Financial Accounting Standards Board.

“Federal Funds Effective Rate” means, for any day, the weighted average (rounded upwards, if necessary, to the next 1/100 of 1%) of the rates on overnight Federal funds transactions with members of the Federal Reserve System arranged by Federal funds brokers, as published on the next succeeding Business Day by the Federal Reserve Bank of New York, or, if such rate is not so published for any day that is a Business Day, the average (rounded upwards, if necessary, to the next 1/100 of 1%) of the quotations for such day for such transactions received by the Administrative Agent from three Federal funds brokers of recognized standing selected by it.

“Financial Officer” means the chief financial officer, principal accounting officer, treasurer or controller of any Credit Party. Any document delivered hereunder that is signed by a Financial Officer of a Credit Party shall be conclusively presumed to have been authorized by all necessary corporate, partnership and/or other action on the part of such Credit Party and such Financial Officer shall be conclusively presumed to have acted on behalf of such Credit Party.

“Foreign Lender” means any Lender that is organized under the laws of a jurisdiction other than that in which any Credit Party is located. For purposes of this definition, the United States of America, each State thereof and the District of Columbia shall be deemed to constitute a single jurisdiction.

“GAAP” means generally accepted accounting principles in the United States of America.

“Gas Balancing Agreement” means any agreement or arrangement whereby the Borrower or any Restricted Subsidiary, or any other party having an interest in any Hydrocarbons to be produced from Oil and Gas Interests in which the Borrower or any Restricted Subsidiary owns an interest, has a right to take more than its proportionate share of production therefrom.

“Governmental Authority” means the government of the United States of America, any other nation or any political subdivision thereof, whether state or local, and any agency, authority, instrumentality, regulatory body, court, central bank or other entity properly exercising executive, legislative, judicial, taxing, regulatory or administrative powers or functions of or pertaining to government.

“Guarantee” of or by any Person (in this definition, the “guarantor”) means any obligation, contingent or otherwise, of the guarantor guaranteeing or having the economic effect of guaranteeing any Indebtedness or other obligation of any other Person (the “primary obligor”) in any manner, whether directly or indirectly, and including any obligation of the guarantor, direct or indirect, (a) to purchase or pay (or advance or supply funds for the purchase or payment of) such Indebtedness or other obligation or to purchase (or to advance or supply funds for the purchase of) any security for the payment thereof, (b) to purchase or lease property, securities or services for the purpose of assuring the owner of such Indebtedness or other obligation of the payment thereof, (c) to maintain working capital, equity capital or any other financial statement condition or liquidity of the primary obligor so as to enable the primary obligor to pay such Indebtedness or other obligation or (d) as an account party in respect of any letter of credit or letter of guaranty issued to support such Indebtedness or obligation; provided, that the term Guarantee shall not include endorsements for collection or deposit in the ordinary course of business.

“Guaranteed Liabilities” has the meaning assigned to such term in Section 8.01.

“Guarantor” means Borrower (with respect to the Obligations of the other Credit Parties) and each Restricted Subsidiary that is a party hereto or hereafter executes and delivers to the Administrative Agent and the Lenders, a Counterpart Agreement pursuant to Section 6.13 or otherwise.

“Hazardous Materials” means all explosive or radioactive substances or wastes and all hazardous or toxic substances, wastes or other pollutants, including petroleum or petroleum distillates, asbestos or asbestos containing materials, polychlorinated biphenyls, radon gas, infectious or medical wastes and all other substances or wastes of any nature regulated pursuant to any Environmental Law.

“Hedge Modification” means the amendment, modification, cancellation, monetization, sale, transfer, assignment, early termination or other disposition of any Swap Agreement (including any Existing Swap Agreement) by any Credit Party or Sponsored Partnership for Crude Oil or Natural Gas.

“Hydrocarbons” means all Crude Oil and Natural Gas produced from or attributable to the Oil and Gas Interests of the Credit Parties.

“Indebtedness” of any Person means, without duplication, (a) all obligations of such Person for borrowed money or with respect to deposits or advances of any kind, (b) all obligations of such Person evidenced by bonds, debentures, notes or similar instruments, (c) all obligations of such Person upon which interest charges are customarily paid, (d) all obligations of such Person under conditional sale or other title retention agreements relating to property acquired by such Person, (e) all obligations of such Person in respect of the deferred purchase price of property or services (excluding accounts payable incurred in the ordinary course of business that are not past due), (f) all Indebtedness of others secured by (or for which the holder of such Indebtedness has an existing right, contingent or otherwise, to be secured by) any Lien on property owned or acquired by such Person, whether or not the Indebtedness secured thereby has been assumed, (g) all Guarantees by such Person of Indebtedness of others, (h) all Capital Lease Obligations of such Person, (i) all obligations, contingent or otherwise, of such Person as an account party in respect of letters of credit and letters of guaranty and (j) all obligations, contingent or otherwise, of such Person in respect of bankers’ acceptances. The Indebtedness of any Person shall include the Indebtedness of any other entity (including any partnership in which such Person is a general partner) to the extent such Person is liable therefor as a result of such Person’s ownership interest in or other relationship with such entity, except to the extent the terms of such Indebtedness provide that such Person is not liable therefor.

“Indemnified Taxes” means Taxes other than Excluded Taxes.

“Indemnitee” has the meaning assigned to such term in Section 11.03.

“Indenture” means (a) the Original Senior Notes Indenture and (b) any indenture by and among any Credit Party, as issuer, and a trustee, pursuant to which any Senior Notes are issued, as the same may be amended, restated, supplemented or otherwise modified from time to time to the extent permitted under this Agreement.

“Information” has the meaning assigned to such term in Section 11.12.

“Initial Borrowing Base” has the meaning assigned to such term in Section 3.01.

“Interest Election Request” means a request by the Borrower to convert or continue a Borrowing in accordance with Section 2.08.

“Interest Payment Date” means (a) with respect to any ABR Loan, the last day of each calendar month, and (b) with respect to any Eurodollar Loan, the last day of the Interest Period applicable to the Borrowing of which such Loan is a part and, in the case of a Eurodollar Borrowing with an Interest Period of more than three months’ duration, each day prior to the last day of such Interest Period that occurs at intervals of three months’ duration after the first day of such Interest Period.

“Interest Period” means with respect to any Eurodollar Borrowing, the period commencing on the date of such Borrowing and ending on the numerically corresponding day in the calendar month that is one, two, three or six months thereafter, as the Borrower may elect; provided, that (i) if any Interest Period would end on a day other than a Business Day, such Interest Period shall be extended to the next succeeding Business Day unless, in the case of a Eurodollar Borrowing only, such next succeeding Business Day would fall in the next calendar month, in which case such Interest Period shall end on the next preceding Business Day and (ii) any Interest Period pertaining to a Eurodollar Borrowing that commences on the last Business Day of a calendar month (or on a day for which there is no numerically corresponding day in the last calendar month of such Interest Period) shall end on the last Business Day of the last calendar month of such Interest Period. For purposes hereof, the date of a Borrowing initially shall be the date on which such Borrowing is made and thereafter shall be the effective date of the most recent conversion or continuation of such Borrowing.

“Issuing Bank” means JPMorgan Chase Bank, N.A., in its capacity as the issuer of Letters of Credit hereunder, and its successors in such capacity as provided in Section 2.06(i). The Issuing Bank may, in its discretion, arrange for one or more Letters of Credit to be issued by Affiliates of the Issuing Bank, in which case the term “Issuing Bank” shall include any such Affiliate with respect to Letters of Credit issued by such Affiliate.

“LC Disbursement” means a payment made by the Issuing Bank pursuant to a Letter of Credit.

“LC Exposure” means, at any time, the sum of (a) the aggregate undrawn amount of all outstanding Letters of Credit at such time plus (b) the aggregate amount of all LC Disbursements that have not yet been reimbursed by or on behalf of the Borrower at such time. The LC Exposure of any Lender at any time shall be its Applicable Percentage of the total LC Exposure at such time.

“Lender Certificate” has the meaning assigned to such term in Section 2.03.

“Lender Counterparty” means any Lender or any Affiliate of a Lender counterparty to a Swap Agreement with any Credit Party.

“Lender Hedging Obligations” means all obligations arising from time to time under Swap Agreements entered into from time to time between any Credit Party and a Lender Counterparty (including any such obligations under any Existing Swap Agreements); provided that if such Lender Counterparty ceases to be a Lender hereunder or an Affiliate of a Lender hereunder, Lender Hedging Obligations shall only include such obligations to the extent arising from transactions entered into at the time such Lender Counterparty was a Lender hereunder or an Affiliate of a Lender hereunder pursuant to any Swap Agreement or any Existing Swap Agreement.

“Lenders” means the Persons listed on Schedule 2.01 and any other Person that shall have become a party hereto pursuant to an Assignment and Assumption or a Lender Certificate, other than any such Person that ceases to be a party hereto pursuant to an Assignment and Assumption.

“Letter of Credit” means the Existing Letters of Credit and any letter of credit issued pursuant to this Agreement.

“LIBO Rate” means, with respect to any Eurodollar Borrowing for any Interest Period, the rate appearing on Reuters Screen LIBOR01 Page, formerly known as Page 3750 of the Moneyline Telerate Service (or on any successor or substitute page of such service, or any successor to or substitute for such service, providing rate quotations comparable to those currently provided on such page of such service, as determined by the Administrative Agent from time to time for purposes of providing quotations of interest rates applicable to dollar deposits in the London interbank market), at approximately 11:00 a.m., London time, two Business Days prior to the commencement of such Interest Period, as the rate for dollar deposits with a maturity comparable to such Interest Period. In the event that such rate is not available at such time for any reason, then the “LIBO Rate” with respect to such Eurodollar Borrowing for such Interest Period shall be the rate at which dollar deposits of $5,000,000 and for a maturity comparable to such Interest Period are offered by the principal London office of the Administrative Agent in immediately available funds in the London interbank market at approximately 11:00 a.m., London time, two Business Days prior to the commencement of such Interest Period.

“Lien” means, with respect to any asset, (a) any mortgage, deed of trust, lien, pledge, hypothecation, encumbrance, charge or security interest in, on or of such asset, (b) the interest of a vendor or a lessor under any conditional sale agreement, capital lease or title retention agreement (or any financing lease having substantially the same economic effect as any of the foregoing) relating to such asset and (c) in the case of securities, any purchase option, call or similar right of a third party with respect to such securities.

“Limited Partnership Interests” means any Equity Interests owned by any Person (other than any Credit Party) in any Sponsored Partnership.

“LMIR” means, for any day, a rate per annum equal to the rate for one month U.S. dollar deposits as reported on Reuters Screen LIBOR01 Page, formerly known as Page 3750 of the Moneyline Telerate Service, as of 11:00 a.m., London time, on such day, or if such day is not a Business Day, then the immediately preceding Business Day (or if not so reported, then any successor to or substitute for such service, providing rate quotations comparable to those currently provided on such page of such service, as determined by the Administrative Agent from time to time for purposes of providing quotations of interest rates applicable to dollar deposits in the London interbank market).

“Loan Documents” means this Agreement, any promissory notes executed in connection herewith, Security Instruments, the Letters of Credit (and any applications therefore and reimbursement agreements related thereto), the Fee Letter and any other agreements executed in connection with this Agreement.

“Loans” means the loans made by the Lenders to the Borrower pursuant to this Agreement.

“Majority Lenders” means, at any time, Lenders having Credit Exposures and Unused Commitments representing more than fifty percent (50%) of the sum of the Aggregate Credit Exposure and all Unused Commitments at such time or, if the Aggregate Commitment has been terminated, Lenders having Credit Exposures representing more than fifty percent (50%) of the Aggregate Credit Exposure at such time.

“Marcellus Joint Venture” means that certain joint venture between Marcellus JV PDC Partner and Marcellus JV Investor Partner pursuant to which the Borrower contributed the Marcellus Properties to PDC Mountaineer in accordance with and as contemplated by the Marcellus JV Contribution Agreement, the Marcellus JV Services Agreement and the other Marcellus JV Documents.

“Marcellus JV Catch-Up Period” has the meaning given to the term “Catch-Up Period” in the PDC Mountaineer LLC Agreement.

“Marcellus JV Contribution Agreement” means that certain Contribution Agreement dated as of October 29, 2009 by and between the Borrower and PDC Mountaineer relating to the Marcellus Joint Venture, as the same may be amended, restated, supplemented or otherwise modified from time to time to the extent permitted hereunder.

“Marcellus JV Documents” means the Marcellus JV Services Agreement, the Marcellus JV Contribution Agreement, the PDC Mountaineer LLC Agreement and any other documents, agreements and instruments (including side letter agreements) governing the Marcellus Joint Venture, in each case, as the same may be amended, restated, supplemented or otherwise modified from time to time to the extent permitted hereunder.

“Marcellus JV Investor Partner” means an entity organized under the laws of the United States, any state thereof or the District of Columbia that is not affiliated with the Borrower and owns Equity Interests in PDC Mountaineer, as identified by the Borrower to the Administrative Agent prior to the contribution of the Marcellus Properties to PDC Mountaineer.

“Marcellus JV PDC Partner” means the Borrower or, if the Borrower shall have transferred its Equity Interests in PDC Mountaineer to one of its wholly-owned Restricted Subsidiaries in accordance with the PDC Mountaineer LLC Agreement, such wholly-owned Restricted Subsidiary.

“Marcellus JV Services Agreement” means that certain Transition, Administrative and Marketing Services Agreement dated as of October 29, 2009 among the Borrower, Riley Natural Gas Company, PDC Eastern, PDC Mountaineer, PDC Mountaineer Operating, LLC and Marcellus JV Investor Partner relating to the Marcellus Joint Venture, as the same may be amended, restated, supplemented or otherwise modified from time to time to the extent permitted hereunder.

“Marcellus JV Withdrawal” means any “Special PDC Withdrawal” under and as defined in the PDC Mountaineer LLC Agreement.

“Marcellus Properties” means the Oil and Gas Interests of the Borrower and PA PDC, LLC that are located in Pennsylvania or West Virginia and have been contributed to PDC Mountaineer (whether directly or through the contribution of the Equity Interests in PA PDC, LLC) pursuant to the Marcellus JV Contribution Agreement in connection with the Marcellus Joint Venture.

“Material Adverse Effect” means a material adverse effect on (a) the business, assets, operations, or financial condition, of the Borrower and its Restricted Subsidiaries taken as a whole, (b) the ability of any Credit Party to perform any of its obligations under this Agreement and the other Loan Documents or (c) the rights of or benefits available to the Lenders under this Agreement and the other Loan Documents.

“Material Domestic Subsidiary” means any Domestic Subsidiary that owns or holds assets, properties or interests (including Oil and Gas Interests either as Direct Interests or Attributed Interests) with an aggregate fair market value, on a consolidated basis, greater than five percent (5%) of the aggregate fair market value of all of the assets, properties and interests (including Oil and Gas Interests either as Direct Interests or Attributed Interests) of the Borrower and its Subsidiaries, on a consolidated basis.

“Material Gas Imbalance” means, with respect to all Gas Balancing Agreements to which Borrower or any Restricted Subsidiary is a party or by which any Oil and Gas Interests owned by Borrower or a Restricted Subsidiary is bound, a net overproduced gas imbalance to Borrower and the Restricted Subsidiaries, taken as a whole, in excess of $1,000,000.

“Material Indebtedness” means Indebtedness permitted under Section 7.01(e) and Section 7.01(h) and any other Indebtedness (other than the Loans and Letters of Credit), or obligations in respect of one or more Swap Agreements, of the Borrower or any one or more of the Restricted Subsidiaries in an aggregate principal amount exceeding $15,000,000. For purposes of determining Material Indebtedness, the “principal amount” of the obligations of the Borrower or any Restricted Subsidiary in respect of any Swap Agreement at any time shall be the maximum aggregate amount (giving effect to any netting agreements) that the Borrower or such Restricted Subsidiary would be required to pay if such Swap Agreement were terminated at such time.

“Material Sales Contract” means, as of any date of determination, any agreement for the sale of Hydrocarbons from the Borrowing Base Properties to which the Borrower, any Restricted Subsidiary or any Sponsored Partnership is a party if the aggregate volume of Hydrocarbons sold pursuant to such agreement during the twelve months immediately preceding such date equals or exceeds 15% of the aggregate volume of Hydrocarbons sold by the Borrower, the Restricted Subsidiaries and the Sponsored Partnerships, on a consolidated basis, from the Borrowing Base Properties during the twelve months immediately preceding such date.

“Maturity Date” means November 5, 2015.

“Maximum Facility Amount” means $600,000,000.

“Maximum Liability” has the meaning assigned to such term in Section 8.10.

“Maximum Rate” has the meaning assigned to such term in Section 11.13.

“Moody’s” means Moody’s Investors Service, Inc.

“Mortgaged Properties” means the Direct Interests described in one or more duly executed, delivered and filed Mortgages evidencing a first and prior Lien in favor of the Administrative Agent for the benefit of the Secured Parties and subject only to the Liens permitted pursuant to Section 7.02.

“Mortgages” means all mortgages, deeds of trust, amendments to mortgages, security agreements, assignments of production, pledge agreements, collateral mortgages, collateral chattel mortgages, collateral assignments, financing statements and other documents, instruments and agreements evidencing, creating, perfecting or otherwise establishing the Liens required by Section 6.09. All Mortgages shall be in form and substance satisfactory to Administrative Agent in its sole discretion.

“Multiemployer Plan” means a multiemployer plan as defined in Section 4001(a)(3) of ERISA.

“Natural Gas” means all natural gas, distillate or sulphur, natural gas liquids and all products recovered in the processing of natural gas (other than condensate) including, without limitation, natural gasoline, coalbed methane gas, casinghead gas, iso-butane, normal butane, propane and ethane (including such methane allowable in commercial ethane).

“Net Cash Proceeds” means, (A) with respect to any Disposition of any Borrowing Base Properties (including Attributed Interests and any Equity Interests of any Restricted Subsidiary owning Borrowing Base Properties) by the Borrower or any Restricted Subsidiary (or Sponsored Partnership with respect to Attributed Interests), the excess, if any, of (a) the sum of cash and cash equivalents received in connection with such sale, but only as and when so received, over (b) the sum of (i) the principal amount of any Indebtedness that is secured by such asset and that is required to be repaid in connection with the sale thereof (other than the Loans), (ii) the out-of-pocket expenses incurred by the Borrower or such Restricted Subsidiary (or Sponsored Partnership with respect to Attributed Interests) in connection with such sale and (iii) to the extent such Disposition includes Other Attributed Interests, the amount required to be paid by Borrower to any Person owning the applicable Limited Partnership Interests as a result of such Disposition pursuant to the partnership or limited liability company agreement of the applicable Sponsored Partnership, (B) with

respect to any Permitted Refinancing or issuance of Senior Notes, the cash proceeds received from such Permitted Refinancing or issuance of Senior Notes, as the case may be, net of underwriting discounts and commissions and other reasonable costs and expenses associated therewith, including reasonable legal fees and expenses, and (C) with respect to any Hedge Modification by the Borrower or any Restricted Subsidiary, the excess, if any, of (a) the sum of cash and cash equivalents received in connection with such Hedge Modification (after giving effect to any netting arrangements), over (b) the sum of (i) the out-of-pocket expenses incurred by the Borrower or such Restricted Subsidiary in connection with such Hedge Modification and (ii) to the extent such Hedge Modification affects Allocated Partnership Volumes, the amount required to be paid by Borrower to any Person owning the applicable Limited Partnership Interests as a result of such Hedge Modification pursuant to the partnership or limited liability company agreement of the applicable Sponsored Partnership.

“New Lender” shall have the meaning assigned to such term in Section 11.17.

“Non-Consenting Lender” has the meaning assigned to such term in Section 2.19(c).

“Obligations” means (a) all obligations of every nature, contingent or otherwise, whether now existing or hereafter arising, of any Credit Party from time to time owed to the Administrative Agent, the Issuing Bank, the Lenders or any of them under any Loan Document, whether for principal, interest, reimbursement of amounts drawn under any Letter of Credit, funding indemnification amounts, fees, expenses, indemnification or otherwise, (b) Lender Hedging Obligations and (c) Cash Management Obligations.

“Off-Balance Sheet Liability” of a Person means (i) any repurchase obligation or liability of such Person with respect to accounts or notes receivable sold by such Person, (ii) any liability under any Sale and Leaseback Transaction which is not a Capital Lease Obligation, (iii) any liability under any so-called “synthetic lease” transaction entered into by such Person, (iv) any Material Gas Imbalance, (v) any Advance Payment Contract, or (vi) any obligation arising with respect to any other transaction which is the functional equivalent of or takes the place of borrowing but which does not constitute a liability on the balance sheets of such Person, but excluding from the foregoing clauses (iii) through (vi) operating leases and usual and customary oil, gas and mineral leases.

“Oil and Gas Interest(s)” means: (a) direct and indirect interests in and rights with respect to oil, gas, mineral and related properties and assets of any kind and nature, direct or indirect, including, without limitation, working, royalty and overriding royalty interests, mineral interests, leasehold interests, production payments, operating rights, net profits interests, other non-working interests, contractual interests, non-operating interests and rights in any pooled, unitized or communitized acreage by virtue of such interest being a part thereof; (b) interests in and rights with respect to Hydrocarbons and other minerals or revenues therefrom and contracts and agreements in connection therewith and claims and rights thereto (including oil and gas leases, operating agreements, unitization, communitization and pooling agreements and orders, division orders, transfer orders, mineral deeds, royalty deeds, oil and gas sales, exchange and processing contracts and agreements and, in each case, interests thereunder), and surface interests, fee interests, reversionary interests, reservations and concessions related to any of the foregoing; (c) easements, rights-of-way, licenses, permits, leases, and other interests associated with, appurtenant to, or necessary for the operation of any of the foregoing; (d) interests

in oil, gas, water, disposal and injection wells, equipment and machinery (including well equipment and machinery), oil and gas production, gathering, transmission, compression, treating, processing and storage facilities (including tanks, tank batteries, pipelines and gathering systems), pumps, water plants, electric plants, gasoline and gas processing plants, refineries and other tangible or intangible, movable or immovable, real or personal property and fixtures located on, associated with, appurtenant to, or necessary for the operation of any of the foregoing; and (e) all seismic, geological, geophysical and engineering records, data, information, maps, licenses and interpretations.

“Organizational Documents” means (a) with respect to any corporation, its certificate or articles of incorporation or organization, as amended, and its by-laws, as amended, (b) with respect to any limited partnership, its certificate of limited partnership, as amended, and its partnership agreement, as amended, (c) with respect to any general partnership, its partnership agreement, as amended, and (d) with respect to any limited liability company, its certificate of formation or articles of organization, as amended, and its limited liability company agreement or operating agreement, as amended.

“Original Credit Agreement” has the meaning assigned to such term in the recitals to this Agreement.

“Original Loans” means the loans and other extensions of credit outstanding under the Original Credit Agreement as of the Effective Date.

“Original Senior Notes” means the 12% Senior Notes due 2018 issued by the Borrower pursuant to and in accordance with the terms of the Indenture.

“Original Senior Notes Indenture” means that certain Indenture dated as of February 8, 2008, by and between the Borrower, as issuer and The Bank of New York, as trustee, as amended and supplemented by the First Supplemental Indenture, dated as of February 8, 2008, and as further amended, restated, supplemented or otherwise modified from time to time to the extent permitted under this Agreement.

“Other Attributed Interests” means any Oil and Gas Interests indirectly owned by any Person (other than any Credit Party) through the ownership of Limited Partnership Interests and attributed to such Person in proportion to such Person’s ownership of such Limited Partnership Interests.

“Other Taxes” means any and all present or future stamp or documentary taxes or any other excise or property taxes, charges or similar levies arising from any payment made hereunder or from the execution, delivery or enforcement of, or otherwise with respect to, this Agreement.

“Parent” means, with respect to any Lender, any Person as to which such Lender is, directly or indirectly, a subsidiary.

“Participant” has the meaning assigned to such term in Section 11.04.

“Partnership Interests” means any Equity Interests owned by any Credit Party in any Sponsored Partnership.

“Payment Currency” has the meaning assigned to such term in Section 8.07.

“PBGC” means the Pension Benefit Guaranty Corporation referred to and defined in ERISA and any successor entity performing similar functions.

“PDC Eastern” means PDC Eastern Operations Company, LLC, a Delaware limited liability company, and its successors and permitted assigns.

“PDC Mountaineer” means PDC Mountaineer, LLC, a Delaware limited liability company, and its successors and permitted assigns.

“PDC Mountaineer LLC Agreement” means that certain Limited Liability Company Agreement of PDC Mountaineer dated as of October 29, 2009, as the same may be amended, restated, supplemented or otherwise modified from time to time to the extent permitted hereunder.

“Permitted Encumbrances” means:

(a) Liens imposed by law for Taxes that are not yet due or are being contested in compliance with Section 6.04;

(b) carriers’, warehousemen’s, mechanics’, materialmen’s, repairmen’s and other like Liens imposed by law, and contractual Liens granted to operators and non-operators under oil and gas operating agreements, in each case, arising in the ordinary course of business or incident to the exploration, development, operation and maintenance of Oil and Gas Interests and securing obligations that are not overdue by more than 30 days or are being contested in compliance with Section 6.04;

(c) pledges and deposits made in the ordinary course of business in compliance with workers’ compensation, unemployment insurance and other social security laws or regulations;

(d) deposits to secure the performance of bids, trade contracts, leases, statutory obligations, surety and appeal bonds, performance bonds and other obligations of a like nature, in each case in the ordinary course of business;

(e) judgment liens in respect of judgments that do not constitute an Event of Default under clause (k) of Article IX;

(f) easements, zoning restrictions, rights-of-way, servitudes, permits, surface leases, and similar encumbrances on real property imposed by law or arising in the ordinary course of business that do not secure any monetary obligations and do not materially detract from the value of the affected property or interfere with the ordinary conduct of business of any Credit Party;

(g) royalties, overriding royalties, reversionary interests and similar burdens granted by the Borrower or any Restricted Subsidiary (or any Sponsored Partnership with respect to Attributed Interests) with respect to the Oil and Gas Interests owned by the Borrower or such Restricted Subsidiary (or such Sponsored Partnership with respect to Attributed Interests), as the case may be, if the net cumulative effect of such burdens does not operate to deprive the Borrower or any Restricted Subsidiary (or any Sponsored Partnership with respect to Attributed Interests) of any material right in respect of its assets or properties (except for rights customarily granted with respect to such interests);

(h) Liens arising from Uniform Commercial Code financing statement filings regarding operating leases entered into by the Borrower, any Restricted Subsidiary or any Sponsored Partnership in the ordinary course of business covering the property under the lease;

(i) unperfected Liens reserved in leases (other than oil and gas leases) or arising by operation of law for rent or compliance with the lease in the case of leasehold estates;

(j) defects in or irregularities of title (other than defects or irregularities of title to Direct Interests or Attributed Interests), if such defects or irregularities do not deprive the Borrower, any Restricted Subsidiary or any Sponsored Partnership of any material right in respect of its assets or properties;

(k)  rights of PDC Mountaineer to acquire Oil and Gas Interests located in the AMI (as defined in the Marcellus JV Documents) acquired by the Borrower or any of its Restricted Subsidiaries pursuant to the terms of the Marcellus JV Documents; and

(l) (i) the obligation of the Borrower to transfer all of the Equity Interests in PDC Eastern to a third party purchaser pursuant to the PDC Mountaineer LLC Agreement as in effect on October 29, 2009 and (ii) the right of PDC Mountaineer to purchase all of the Equity Interests in PDC Eastern pursuant to the PDC Mountaineer LLC Agreement as in effect on October 29, 2009;

provided that the term “Permitted Encumbrances” shall not include any Lien securing Indebtedness.

“Permitted Investments” means:

(a) U.S. Government Securities;

(b) investments in commercial paper maturing within 270 days from the date of acquisition thereof and having, at such date of acquisition, the highest credit rating obtainable from S&P or from Moody’s;

(c) investments in certificates of deposit, banker’s acceptances and time deposits maturing within 180 days from the date of acquisition thereof issued or guaranteed by or placed with, and money market deposit accounts issued or offered by, any domestic office of any commercial bank organized under the laws of the United States of America or any State thereof which has a combined capital and surplus and undivided profits of not less than $500,000,000;

(d) fully collateralized repurchase agreements with a term of not more than 30 days for securities described in clause (a) above and entered into with a financial institution satisfying the criteria described in clause (c) above; and

(e) money market funds that (i) comply with the criteria set forth in Securities and Exchange Commission Rule 2a-7 under the Investment Company Act of 1940, (ii) are rated AAA by S&P and Aaa by Moody’s and (iii) have portfolio assets of at least $5,000,000,000.

“Permitted Refinancing” means any Indebtedness of any Credit Party, and Indebtedness constituting Guarantees thereof by any Credit Party, incurred or issued in exchange for, or the Net Cash Proceeds of which are used solely to extend, refinance, renew, replace, defease or refund, existing Senior Notes, in whole or in part, from time to time; provided that (a) the principal amount of such Permitted Refinancing (or if such Permitted Refinancing is issued at a discount, the initial issuance price of such Permitted Refinancing) does not exceed the principal amount of Indebtedness permitted under Section 7.01(h) (plus the amount of any premiums paid and fees and expenses incurred in connection therewith), (b) such Permitted Refinancing does not provide for any scheduled repayment, mandatory redemption or payment of a sinking fund obligation prior to the date that is six months after the Maturity Date (except for any offer to redeem such Indebtedness required as a result of asset sales or the occurrence of a “Change of Control” under and as defined in the Indenture), (c)  the covenant, default and remedy provisions of such Permitted Refinancing are not materially more onerous to the Borrower and its Subsidiaries than those imposed by the existing Senior Notes, (d) the mandatory prepayment, repurchase and redemption provisions of such Permitted Refinancing are not materially more onerous to the Borrower and its Subsidiaries than those imposed by the existing Senior Notes, (e) the non-default cash interest rate on the outstanding principal balance of such Permitted Refinancing does not exceed the prevailing market rate then in effect for similarly situated credits at the time such Permitted Refinancing is incurred, (f) such Permitted Refinancing is unsecured, (g) no Subsidiary of the Borrower is required to Guarantee such Permitted Refinancing unless such Subsidiary is (or concurrently with any such Guarantee becomes) a Guarantor hereunder, and (h) to the extent such Permitted Refinancing is or is intended to be expressly subordinate to the payment in full of all of the Obligations, the subordination provisions contained therein are either (x) at least as favorable to the Secured Parties as the subordination provisions contained in the existing Senior Notes or (y) reasonably satisfactory to the Administrative Agent and the Majority Lenders.

“Person” means any natural person, corporation, limited liability company, trust, joint venture, association, company, partnership, Governmental Authority or other entity.

“Plan” means any employee pension benefit plan (other than a Multiemployer Plan) subject to the provisions of Title IV of ERISA or Section 412 of the Code or Section 302 of ERISA, and in respect of which any Credit Party or any ERISA Affiliate is (or, if such plan were terminated, would under Section 4069 of ERISA be deemed to be) an “employer” as defined in Section 3(5) of ERISA.

“Prime Rate” means the rate of interest per annum publicly announced from time to time by JPMorgan Chase Bank, N.A. as its prime rate in effect at its principal office in New York, New York, each change in the Prime Rate shall be effective from and including the date such change is publicly announced as being effective. THE PRIME RATE IS A REFERENCE RATE AND MAY NOT BE JPMORGAN CHASE BANK, N.A.’S LOWEST RATE.

“Projections” means the Borrower’s forecasted (a) balance sheets, (b) profit and loss statements, and (c) cash flow statements, all prepared on a basis consistent with the historical financial statements described in Section 4.04 and after giving effect to the Transactions, together with appropriate supporting details and a statement of underlying assumptions, in each case in form and substance satisfactory to the Lenders and for the period from the Effective Date through December 31, 2012.

“Redetermination” means any Scheduled Redetermination or Special Redetermination.

“Redetermination Date” means each date on which the Borrowing Base is redetermined pursuant to the terms hereof, which shall be (a) with respect to any Scheduled Redetermination, on or about May 1 and November 1 of each year, commencing May 1, 2011, (b) with respect to any Special Redetermination requested by the Borrower pursuant to Section 3.03, the first day of the first month which is not less than twenty (20) Business Days following the date of a request by the Borrower for a Special Redetermination and (c) with respect to any Special Redetermination requested by the Required Lenders, the date notice of such Redetermination is delivered to the Borrower pursuant to Section 3.04.

“Register” has the meaning assigned to such term in Section 11.04.

“Related Parties” means, with respect to any specified Person, such Person’s Affiliates and the respective directors, officers, employees, agents and advisors of such Person and such Person’s Affiliates.

“Required Lenders” means, at any time, Lenders having Credit Exposures and Unused Commitments representing at least sixty-six and two-thirds percent (66-2/3%) of the sum of the Aggregate Credit Exposure and all Unused Commitments of all Lenders at such time or, if the Aggregate Commitment has been terminated, Lenders having Credit Exposures representing at least sixty-six and two-thirds percent (66-2/3%) of the Aggregate Credit Exposure of all Lenders at such time.

“Reserve Report” means an unsuperseded engineering analysis of the Borrowing Base Properties, in form and substance reasonably acceptable to the Administrative Agent, prepared in accordance with customary and prudent practices in the petroleum engineering industry and setting forth, in reasonable detail, (i) that portion of the Oil and Gas Interests included in such report that are Attributed Interests, (ii) the Sponsored Partnership that owns the underlying Oil and Gas Interests relating to such Attributed Interests and (iii) the Partnership Interests owned by each Credit Party in such Sponsored Partnership.

“Responsible Officer” means the chief executive officer, president, vice president, chief financial officer, principal accounting officer, treasurer or assistant treasurer of a Credit Party. Any document delivered hereunder that is signed by a Responsible Officer of a Credit Party shall be conclusively presumed to have been authorized by all necessary corporate, partnership and/or other action on the part of such Credit Party and such Responsible Officer shall be conclusively presumed to have acted on behalf of such Credit Party.

“Restricted Payment” means any dividend or other distribution (whether in cash, securities or other property) with respect to any Equity Interests in any Credit Party, or any payment (whether in cash, securities or other property), including any sinking fund or similar deposit, on account of the purchase, redemption, retirement, acquisition, cancellation or termination of any such Equity Interests in any Credit Party or any option, warrant or other right to acquire any such Equity Interests in any Credit Party.

“Restricted Subsidiary” means any Subsidiary that is not an Unrestricted Subsidiary.

“S&P” means Standard & Poor’s Ratings Group, a division of The McGraw Hill Corporation.

“Sale and Leaseback Transaction” means any sale or other transfer of any property by any Person with the intent to lease such property as lessee.

“Scheduled Redetermination” means any redetermination of the Borrowing Base pursuant to Section 3.02.

“Secured Party” means the Administrative Agent, any Lender, any Lender Counterparty and any other holder of Obligations including any Cash Management Obligations and Lender Hedging Obligations.

“Security Agreement” means that certain Pledge and Security Agreement dated as of the Effective Date, in favor of the Administrative Agent for the benefit of the Secured Parties, covering, among other things, the rights and interests of the Credit Parties in all or substantially all of the assets of such Credit Party, including all of the Equity Interests of each Restricted Subsidiary and Sponsored Partnership now or hereafter owned by any Credit Party, and otherwise in form and substance satisfactory to the Administrative Agent.

“Security Instruments” means collectively, all Guarantees of the Obligations evidenced by the Loan Documents, the Security Agreement and all mortgages, security agreements, pledge agreements, collateral assignments and other collateral documents covering the Direct Interests and the Equity Interests of the Restricted Subsidiaries and other personal property, equipment, oil and gas inventory and proceeds of the foregoing, all such documents to be in form and substance reasonably satisfactory to the Administrative Agent.

“Senior Notes” means (a) the Original Senior Notes and (b) any other senior, senior subordinated or senior convertible notes issued by the Borrower pursuant to and in accordance with the terms of the Indenture; provided that (a) the terms of such Senior Notes do not provide for any scheduled repayment, mandatory redemption or payment of a sinking fund obligation prior to the date that is six months after the Maturity Date (except for any offer to redeem such Senior Notes required as a result of asset sales or the occurrence of a “Change of Control” under and as defined in the Indenture), (b) such Senior Notes are unsecured, (c) the non-default interest rate on the outstanding principal balance of such notes does not exceed the prevailing market rate then in effect for similarly situated credits at the time such notes are issued, (d) no Subsidiary of the Borrower is required to Guarantee the Indebtedness evidenced by such Senior Notes unless such Subsidiary is (or concurrently with any such Guarantee becomes) a Guarantor hereunder, (e) the covenant, default and remedy provisions of such Senior Notes are not materially more onerous to the Borrower and its Subsidiaries than those imposed by the Original Senior Notes, (f) the mandatory prepayment, repurchase and redemption provisions of such Senior Notes are not materially more onerous to the Borrower and its Subsidiaries than those imposed by the Original Senior Notes and (g) with respect to any senior subordinated notes, such notes are expressly subordinate to the payment in full of all of the Obligations on terms and conditions reasonably satisfactory to the Administrative Agent and the Majority Lenders.

“Senior Notes Documents” means the Senior Notes, the Indenture and any documents or instruments contemplated by or executed in connection with any of them, in each case, as amended, modified, supplemented or restated from time to time to the extent permitted hereunder.

“Special Redetermination” means any redetermination of the Borrowing Base made pursuant to Section 3.03.

“Sponsored Partnership” means any partnership or limited liability company meeting each of the following requirements: (a) a Credit Party is the sole general partner of such partnership or the sole manager of such limited liability company, as the case may be, (b) such partnership or limited liability company is organized pursuant to a partnership or operating agreement reasonably satisfactory to the Administrative Agent and the Majority Lenders and otherwise acceptable to the Administrative Agent in its sole discretion, (c) such partnership or limited liability company is primarily involved in oil and gas exploration, development, acquisition or production, and owns no other material assets other than Oil and Gas Interests, (d) such partnership or limited liability company is not an obligor, as a borrower, a guarantor or otherwise, on any Indebtedness other than Indebtedness such partnership or limited liability company is permitted to incur under this Agreement and (e) a Credit Party is the operator of the Oil and Gas Interests owned by such partnership or limited liability company. For the avoidance of doubt, PDC Mountaineer is not a Sponsored Partnership.

“Statutory Reserve Rate” means a fraction (expressed as a decimal), the numerator of which is the number one and the denominator of which is the number one minus the aggregate of the maximum reserve percentages (including any marginal, special, emergency or supplemental reserves) expressed as a decimal established by the Board to which the Administrative Agent is subject for eurocurrency funding (currently referred to as “Eurocurrency Liabilities” in Regulation D of the Board). Such reserve percentages shall include those imposed pursuant to such Regulation D. Eurodollar Loans shall be deemed to constitute eurocurrency funding and to be subject to such reserve requirements without benefit of or credit for proration, exemptions or offsets that may be available from time to time to any Lender under such Regulation D or any comparable regulation. The Statutory Reserve Rate shall be adjusted automatically on and as of the effective date of any change in any reserve percentage.

“Subsidiary” means, with respect to any Person (the “parent”) at any date, any corporation, limited liability company, partnership, association or other entity the accounts of which would be consolidated with those of the parent in the parent’s consolidated financial statements if such financial statements were prepared in accordance with GAAP as of such date, as well as any other corporation, limited liability company, partnership, association or other entity (a) of which securities or other ownership interests representing more than 50% of the equity or more than 50% of the ordinary voting power or, in the case of a partnership (other than a Sponsored Partnership), more than 50% of the general partnership interests are, as of such date, owned, controlled or held, or (b) that is, as of such date, otherwise Controlled, by the parent or one or more subsidiaries of the parent or by the parent and one or more subsidiaries of the parent. Unless the context otherwise clearly requires, references herein to a “Subsidiary” refer to a Subsidiary of the Borrower, other than the Sponsored Partnerships. Notwithstanding the foregoing, it is understood and agreed that, for so long as the Borrower and its Restricted Subsidiaries own less than 100% of the Equity Interests in PDC Mountaineer, neither PDC Mountaineer nor any Subsidiary of PDC Mountaineer shall be a Subsidiary of the Borrower for purposes of this Agreement and the other Loan Documents.

“Swap Agreement” means any agreement with respect to any swap, forward, future or derivative transaction or option or similar agreement involving, or settled by reference to, one or more rates, currencies, commodities, equity or debt instruments or securities, or economic, financial or pricing indices or measures of economic, financial or pricing risk or value or any similar transaction or any combination of these transactions; provided that no phantom stock or similar plan providing for payments only on account of services provided by current or former directors, officers, employees or consultants of the Credit Parties shall be a Swap Agreement.

“Syndication Agent” means, so long as it is a Lender, BNP Paribas, in its capacity as Syndication Agent.

“Taxes” means any and all present or future taxes, levies, imposts, duties, deductions, charges or withholdings imposed by any Governmental Authority.

“Transactions” means (a) the execution, delivery and performance by the Credit Parties of this Agreement and the other Loan Documents, (b) the borrowing of Loans, (c) the use of the proceeds thereof, and (d) the issuance of Letters of Credit hereunder.

“Type”, when used in reference to any Loan or Borrowing, refers to whether the rate of interest on such Loan, or on the Loans comprising such Borrowing, is determined by reference to the Adjusted LIBO Rate or the Alternate Base Rate.

“Unrestricted Subsidiary” means (a) any Subsidiary that at the time of determination shall be designated an Unrestricted Subsidiary by the Board of Directors of the Borrower in the manner provided below, (b) any Subsidiary of an Unrestricted Subsidiary and (c) PDC Eastern and any of its Subsidiaries. The Board of Directors of the Borrower may designate any Subsidiary (including any newly acquired or newly formed Subsidiary) to be an Unrestricted Subsidiary unless such Subsidiary or any of its Subsidiaries at the time of such designation or at any time thereafter (i) is a Material Domestic Subsidiary, (ii) owns Oil and Gas Interests included in the Borrowing Base Properties, (iii) is the operator, by contract or otherwise, of any Oil and Gas Interests included in the Borrowing Base Properties or (iv) guarantees, or is a primary obligor of, any indebtedness, liabilities, or other obligations under any Senior Notes (or any Permitted Refinancing thereof).

“Unused Commitment Fee” has the meaning assigned to such term in Section 2.12(a).

“Unused Commitment” means, with respect to each Lender at any time, such Lender’s Commitment at such time minus such Lender’s Credit Exposure at such time.

“U.S. Government Securities” means direct obligations of, or obligations the principal of and interest on which are unconditionally guaranteed by, the United States of America (or by any agency or instrumentality thereof to the extent such obligations are entitled to the full faith and credit of the United States of America), in each case maturing within one year from the date of acquisition thereof.

“Withdrawal Liability” means liability to a Multiemployer Plan as a result of a complete or partial withdrawal from such Multiemployer Plan, as such terms are defined in Part I of Subtitle E of Title IV of ERISA.

Section 1.02. Types of Loans and Borrowings. For purposes of this Agreement, Loans may be classified and referred to by Type (e.g., a “Eurodollar Loan” or an “ABR Loan. Borrowings also may be classified and referred to by Type (e.g., a “Eurodollar Borrowing” or an “ABR Borrowing”).

Section 1.03. Terms Generally. The definitions of terms herein shall apply equally to the singular and plural forms of the terms defined. Whenever the context may require, any pronoun shall include the corresponding masculine, feminine and neuter forms. The words “include”, “includes” and “including” shall be deemed to be followed by the phrase “without limitation”. The word “will” shall be construed to have the same meaning and effect as the word “shall”. Unless the context requires otherwise (a) any definition of or reference to any agreement, instrument or other document herein shall be construed as referring to such agreement, instrument or other document as from time to time amended, supplemented or otherwise modified (subject to any restrictions on such amendments, supplements or modifications set forth herein), (b) any reference herein to any Person shall be construed to include such Person’s successors and assigns, (c) the words “herein”, “hereof” and “hereunder”, and words of similar import, shall be construed to refer to this Agreement in its entirety and not to any particular provision hereof, (d) all references herein to Articles, Sections, Exhibits and Schedules shall be construed to refer to Articles and Sections of, and Exhibits and Schedules to, this Agreement and (e) the words “asset” and “property” shall be construed to have the same meaning and effect and to refer to any and all tangible and intangible assets and properties, including cash, securities, accounts and contract rights.

Section 1.04. Accounting Terms; GAAP. Except as otherwise expressly provided herein, all terms of an accounting or financial nature shall be construed in accordance with GAAP, as in effect from time to time; provided that, if the Borrower notifies the Administrative Agent that the Borrower requests an amendment to any provision hereof to eliminate the effect of any change occurring after the date hereof in GAAP or in the application thereof on the operation of such provision (or if the Administrative Agent notifies the Borrower that the Majority Lenders request an amendment to any provision hereof for such purpose), regardless of whether any such notice is given before or after such change in GAAP or in the application thereof, then such provision shall be interpreted on the basis of GAAP as in effect and applied immediately before such change shall have become effective until such notice shall have been withdrawn or such provision amended in accordance herewith.

Section 1.05. Oil and Gas Definitions. For purposes of this Agreement, the terms “proved reserves,” “proved developed reserves,” “proved undeveloped reserves,” “proved developed nonproducing reserves” and “proved developed producing reserves,” have the meaning given such terms from time to time and at the time in question by the Society of Petroleum Engineers of the American Institute of Mining Engineers.

Section 1.06. Time of Day. Unless otherwise specified, all references to times of day shall be references to Central time (daylight or standard, as applicable).

Article II

The Credits

Section 2.01. Commitments. Subject to the terms and conditions set forth herein, each Lender that was a Lender under and as defined in the Original Credit Agreement agrees to continue the Original Loans and each Lender agrees to make one or more Loans to the Borrower from time to time on any Business Day during the Availability Period in an aggregate principal amount that will not result in (a) such Lender’s Credit Exposure exceeding such Lender’s Commitment or (b) the Aggregate Credit Exposure exceeding the Aggregate Commitment. Within the foregoing limits and subject to the terms and conditions set forth herein, the Borrower may borrow, prepay and reborrow Loans.

Section 2.02. Termination and Reduction of the Aggregate Commitment.

(a) Unless previously terminated, the Aggregate Commitment shall terminate on the Maturity Date.

(b) The Borrower may at any time terminate, or from time to time reduce, the Aggregate Commitment; provided that (i) each reduction of the Aggregate Commitment shall be in an amount that is an integral multiple of $1,000,000 and not less than $1,000,000 and shall be applied ratably to each Lender’s Commitment and (ii) the Borrower shall not terminate or reduce the Aggregate Commitment if, after giving effect to any concurrent prepayment of the Loans in accordance with Section 2.10 and Section 2.11, the Aggregate Credit Exposure would exceed the Aggregate Commitment.

(c) The Borrower shall notify the Administrative Agent of any election to terminate or reduce the Aggregate Commitment under paragraph (b) of this Section at least three Business Days prior to the effective date of such termination or reduction, specifying such election and the effective date thereof. Promptly following receipt of any notice, the Administrative Agent shall advise the Lenders of the contents thereof. Each notice delivered by the Borrower pursuant to this Section shall be irrevocable; provided that a notice of termination of the Aggregate Commitment delivered by the Borrower may state that such notice is conditioned upon the effectiveness of other credit facilities, in which case such notice may be revoked by the Borrower (by notice to the Administrative Agent on or prior to the specified effective date) if such condition is not satisfied. Any termination of the Aggregate Commitment shall be permanent. Each reduction of the Aggregate Commitment shall be made ratably among the Lenders in accordance with their respective Commitment.

Section 2.03. Additional Lenders; Increases in the Aggregate Commitment. If (a) no Default exists as of the date of such increase or would be caused by such increase, (b) the Borrower shall concurrently pay any additional fees required as a result of such increase, (c) immediately after giving effect to such increase, the Aggregate Commitment does not exceed the Borrowing Base then in effect, and (d) at the time of and immediately after giving effect to such increase, the Borrower is in pro forma compliance with the financial covenants set forth in Section 7.11 as of the last day of the most recently ended fiscal quarter for which the financial statements and compliance certificate required under Section 6.01 have been delivered to the Administrative Agent and the Lenders, the Borrower may, at any time and from time to time, with the consent of the Administrative Agent, increase the Aggregate Commitment to an amount not to exceed the Maximum Facility Amount by providing written notice of such increase to the Administrative Agent. Each Lender shall have the right, but not the obligation, in each such Lender’s sole discretion, to provide a portion of such increase in the Aggregate Commitment up to the portion of such increase that such Lender’s existing Commitment bears to the aggregate amount of the existing Commitments of all Lenders electing to participate in such requested increase by executing and delivering to the Borrower and the Administrative Agent a certificate substantially in the form of Exhibit F hereto (a “Lender Certificate”). In the event that within 10 Business Days of the Administrative Agent’s receipt of such written notice the existing Lenders fail to provide increases in their respective Commitments sufficient to satisfy such requested increase in the Aggregate Commitment, the Borrower may adjust the previously requested increase to reflect the increased Commitments of existing Lenders or one or more financial institutions reasonably acceptable to the Administrative Agent may become a Lender under this Agreement by executing and delivering to the Borrower and the Administrative Agent a Lender Certificate. Upon receipt by the Administrative Agent of Lender Certificates representing increases to existing Lender Commitments and/or Commitments from new Lenders as provided in this Section 2.03 in an aggregate amount equal to the requested increase (as the same may have been adjusted), (i) the Aggregate Commitment (including the Commitment of any Person that becomes a Lender by delivery of such a Lender Certificate) automatically without further action by the Borrower, the Administrative Agent or any Lender shall be increased on the effective date set forth in such Lender Certificates by the amount indicated in such Lender Certificates, (ii) the Register shall be amended to add the Commitment of each additional Lender or to reflect the increase in the Commitment of each existing Lender, and the Applicable Percentages of the Lenders shall be adjusted accordingly to reflect each additional Lender or the increase in the Commitment of each existing Lender, (iii) any such additional Lender shall be deemed to be a party in all respects to this Agreement and any other Loan Documents to which the Lenders are a party, and (iv) upon the effective date set forth in such Lender Certificate, any such Lender party to the Lender Certificate shall purchase and each existing Lender shall assign to such Lender a pro rata portion of the outstanding Credit Exposure of each of the existing Lenders such that the Lenders (including any additional Lender, if applicable) shall have the appropriate portion of the Aggregate Credit Exposure of the Lenders (based in each case on such Lender’s Applicable Percentage, as revised pursuant to this Section), and the Borrower shall have paid to the Lenders any amounts due pursuant to Section 2.16 as a result of such purchase and assignment.

Section 2.04. Loans and Borrowings.

(a) Each Loan shall be made as part of a Borrowing consisting of Loans made by the Lenders ratably in accordance with their respective Commitments. The failure of any Lender to make any Loan required to be made by it shall not relieve any other Lender of its obligations hereunder; provided that the Commitments of the Lenders are several and no Lender shall be responsible for any other Lender’s failure to make Loans as required.

(b) Subject to Section 2.14, each Borrowing shall be comprised entirely of ABR Loans or Eurodollar Loans as the Borrower may request in accordance herewith. Each Lender at its option may make any Eurodollar Loan by causing any domestic or foreign branch or Affiliate of such Lender to make such Loan; provided that any exercise of such option shall not affect the obligation of the Borrower to repay such Loan in accordance with the terms of this Agreement.

(c) At the commencement of each Interest Period for any Eurodollar Borrowing, such Borrowing shall be in an aggregate amount that is an integral multiple of $500,000 and not less than $500,000. At the time that each ABR Borrowing is made, such Borrowing shall be in an aggregate amount that is an integral multiple of $500,000 and not less than $500,000; provided that an ABR Borrowing may be in an aggregate amount that is equal to the entire unused balance of the Aggregate Commitment or that is required to finance the reimbursement of an LC Disbursement as contemplated by Section 2.06(e). Borrowings of more than one Type may be outstanding at the same time; provided that there shall not at any time be more than a total of four (4) Eurodollar Borrowings outstanding.

(d) Notwithstanding any other provision of this Agreement, the Borrower shall not be entitled to request, or to elect to convert or continue, any Borrowing if the Interest Period requested with respect thereto would end after the Maturity Date.

Section 2.05. Requests for Borrowings. To request a Borrowing, the Borrower shall notify the Administrative Agent of such request by telephone (a) in the case of a Eurodollar Borrowing, not later than 11:00 a.m., three Business Days before the date of the proposed Borrowing or (b) in the case of an ABR Borrowing, not later than 11:00 a.m., on the date of the proposed Borrowing (so long as such date is a Business Day); provided that any such notice of an ABR Borrowing to finance the reimbursement of an LC Disbursement as contemplated by Section 2.06(e) may be given not later than 10:00 a.m., on the date of the proposed Borrowing. Each such telephonic Borrowing Request shall be irrevocable and shall be confirmed promptly by hand delivery or telecopy to the Administrative Agent of a written Borrowing Request in a form approved by the Administrative Agent and signed by the Borrower. Each such telephonic and written Borrowing Request shall specify the following information in compliance with Section 2.04:

(i) the aggregate amount of the requested Borrowing;

(ii) the date of such Borrowing, which shall be a Business Day;

(iii) whether such Borrowing is to be an ABR Borrowing or a Eurodollar Borrowing;

(iv) in the case of a Eurodollar Borrowing, the initial Interest Period to be applicable thereto, which shall be a period contemplated by the definition of the term “Interest Period”; and

(v) the location and number of the Borrower’s account to which funds are to be disbursed, which shall comply with the requirements of Section 2.07.

If no election as to the Type of Borrowing is specified, then the requested Borrowing shall be an ABR Borrowing. If no Interest Period is specified with respect to any requested Eurodollar Borrowing, then the Borrower shall be deemed to have selected an Interest Period of one month’s duration. Promptly following receipt of a Borrowing Request in accordance with this Section, the Administrative Agent shall advise each Lender of the details thereof and of the amount of such Lender’s Loan to be made as part of the requested Borrowing.

Section 2.06. Letters of Credit.

(a) General. Subject to the terms and conditions set forth herein, the Borrower may request the issuance of Letters of Credit for its own or the account of any Restricted Subsidiary in a form reasonably acceptable to the Administrative Agent and the Issuing Bank, at any time and from time to time during the Availability Period. In the event of any inconsistency between the terms and conditions of this Agreement and the terms and conditions of any form of letter of credit application or other agreement submitted by the Borrower to, or entered into by the Borrower with, the Issuing Bank relating to any Letter of Credit, the terms and conditions of this Agreement shall control.

(b) Notice of Issuance, Amendment, Renewal, Extension; Certain Conditions. To request the issuance of a Letter of Credit (or the amendment, renewal or extension of an outstanding Letter of Credit), the Borrower shall hand deliver or telecopy (or transmit by electronic communication, if arrangements for doing so have been approved by the Issuing Bank) to the Issuing Bank and the Administrative Agent (reasonably in advance of the requested date of issuance, amendment, renewal or extension) a notice requesting the issuance of a Letter of Credit, or identifying the Letter of Credit to be amended, renewed or extended, and specifying the date of issuance, amendment, renewal or extension (which shall be a Business Day), the date on which such Letter of Credit is to expire (which shall comply with paragraph (c) of this Section), the amount of such Letter of Credit, the name and address of the beneficiary thereof and such other information as shall be necessary to prepare, amend, renew or extend such Letter of Credit. If requested by the Issuing Bank, the Borrower also shall submit a letter of credit application on the Issuing Bank’s standard form in connection with any request for a Letter of Credit. A Letter of Credit shall be issued, amended, renewed or extended only if (and upon issuance, amendment, renewal or extension of each Letter of Credit the Borrower shall be deemed to represent and warrant that), after giving effect to such issuance, amendment, renewal or extension (i) the LC Exposure shall not exceed $50,000,000 and (ii) the Aggregate Credit Exposure shall not exceed the Aggregate Commitment.

(c) Expiration Date. Each Letter of Credit (other than any Existing Letter of Credit) shall expire at or prior to the close of business on the earlier of (i) the date one year after the date of the issuance of such Letter of Credit (or, in the case of any renewal or extension thereof, one year after such renewal or extension) and (ii) the date that is five Business Days prior to the Maturity Date. Each Existing Letter of Credit shall expire at or prior to the close of business on the earlier of (i) the expiration date of such Existing Letter of Credit as in effect on the Effective Date (or, in the case of any renewal or extension thereof, one year after such renewal or extension) and (ii) the date that is five Business Days prior to the Maturity Date.

(d) Participations. By the issuance of a Letter of Credit (or an amendment to a Letter of Credit increasing the amount thereof) and without any further action on the part of the Issuing Bank or the Lenders, the Issuing Bank hereby grants to each Lender, and each Lender hereby acquires from the Issuing Bank, a participation in such Letter of Credit equal to such Lender’s Applicable Percentage of the aggregate amount available to be drawn under such Letter of Credit. In consideration and in furtherance of the foregoing, each Lender hereby absolutely and unconditionally agrees to pay to the Administrative Agent, for the account of the Issuing Bank, such Lender’s Applicable Percentage of each LC Disbursement made by the Issuing Bank and not reimbursed by the Borrower on the date due as provided in paragraph (e) of this Section, or of any reimbursement payment required to be refunded to the Borrower for any reason. Each Lender acknowledges and agrees that its obligation to acquire participations pursuant to this paragraph in respect of Letters of Credit is absolute and unconditional and shall not be affected by any circumstance whatsoever, including any amendment, renewal or extension of any Letter of Credit or the occurrence and continuance of a Default or reduction or termination of the Aggregate Commitment, and that each such payment shall be made without any offset, abatement, withholding or reduction whatsoever.

(e) Reimbursement. If the Issuing Bank shall make any LC Disbursement in respect of a Letter of Credit, the Borrower shall reimburse such LC Disbursement by paying to the Administrative Agent an amount equal to such LC Disbursement not later than 12:00 noon on the date that such LC Disbursement is made, if the Borrower shall have received notice of such LC Disbursement prior to 10:00 a.m. on such date, or, if such notice has not been received by the Borrower prior to such time on such date, then not later than 12:00 noon on the Business Day immediately following the day that the Borrower receives such notice; provided that the Borrower may, subject to the conditions to borrowing set forth herein, request in accordance with Section 2.05 that such payment be financed with an ABR Borrowing in an equivalent amount and, to the extent so financed, the Borrower’s obligation to make such payment shall be discharged and replaced by the resulting ABR Borrowing. If the Borrower fails to make such payment when due, the Administrative Agent shall notify each Lender of the applicable LC Disbursement, the payment then due from the Borrower in respect thereof and such Lender’s Applicable Percentage thereof. Promptly following receipt of such notice, each Lender shall pay to the Administrative Agent its Applicable Percentage of the payment then due from the Borrower, in the same manner as provided in Section 2.07 with respect to Loans made by such Lender (and Section 2.07 shall apply, mutatis mutandis, to the payment obligations of the Lenders), and the Administrative Agent shall promptly pay to the Issuing Bank the amounts so received by it from the Lenders. Promptly following receipt by the Administrative Agent of any payment from the Borrower pursuant to this paragraph, the Administrative Agent shall distribute such payment to the Issuing Bank or, to the extent that Lenders have made payments pursuant to this paragraph to reimburse the Issuing Bank, then to such Lenders and the Issuing Bank as their interests may appear. Any payment made by a Lender pursuant to this paragraph to reimburse the Issuing Bank for any LC Disbursement (other than the funding of ABR Loans as contemplated above) shall not constitute a Loan and shall not relieve the Borrower of its obligation to reimburse such LC Disbursement.

(f) Obligations Absolute. The Borrower’s obligation to reimburse LC Disbursements as provided in paragraph (e) of this Section shall be absolute, unconditional and irrevocable, and shall be performed strictly in accordance with the terms of this Agreement under any and all circumstances whatsoever and irrespective of (i) any lack of validity or enforceability of any Letter of Credit or this Agreement, or any term or provision therein, (ii) any draft or other document presented under a Letter of Credit proving to be forged, fraudulent or invalid in any respect or any statement therein being untrue or inaccurate in any respect, (iii) payment by the Issuing Bank under a Letter of Credit against presentation of a draft or other document that does not comply with the terms of such Letter of Credit, or (iv) any other event or circumstance whatsoever, whether or not similar to any of the foregoing, that might, but for the provisions of this Section, constitute a legal or equitable discharge of, or provide a right of setoff against, the Borrower’s obligations hereunder. Neither the Administrative Agent, the Lenders nor the Issuing Bank, nor any of their Related Parties, shall have any liability or responsibility by reason of or in connection with the issuance or transfer of any Letter of Credit or any payment or failure to make any payment thereunder (irrespective of any of the circumstances referred to in the preceding sentence), or any error, omission, interruption, loss or delay in transmission or delivery of any draft, notice or other communication under or relating to any Letter of Credit (including any document required to make a drawing thereunder), any error in interpretation of technical terms or any consequence arising from causes beyond the control of the Issuing Bank; provided that the foregoing shall not be construed to excuse the Issuing Bank from liability to the Borrower to the extent of any direct damages (as opposed to consequential damages, claims in respect of which are hereby waived by the Borrower to the extent permitted by applicable law) suffered by the Borrower that are caused by the Issuing Bank’s failure to exercise care when determining whether drafts and other documents presented under a Letter of Credit comply with the terms thereof. The parties hereto expressly agree that, in the absence of gross negligence or willful misconduct on the part of the Issuing Bank (as finally determined by a court of competent jurisdiction), the Issuing Bank shall be deemed to have exercised care in each such determination. In furtherance of the foregoing and without limiting the generality thereof, the parties agree that, with respect to documents presented which appear on their face to be in substantial compliance with the terms of a Letter of Credit, the Issuing Bank may, in its sole discretion, either accept and make payment upon such documents without responsibility for further investigation, regardless of any notice or information to the contrary, or refuse to accept and make payment upon such documents if such documents are not in strict compliance with the terms of such Letter of Credit.

(g) Disbursement Procedures. The Issuing Bank shall, promptly following its receipt thereof, examine all documents purporting to represent a demand for payment under a Letter of Credit. The Issuing Bank shall promptly notify the Administrative Agent and the Borrower by telephone (confirmed by telecopy) of such demand for payment and whether the Issuing Bank has made or will make an LC Disbursement thereunder; provided that any failure to give or delay in giving such notice shall not relieve the Borrower of its obligation to reimburse the Issuing Bank and the Lenders with respect to any such LC Disbursement.

(h) Interim Interest. If the Issuing Bank shall make any LC Disbursement, then, unless the Borrower shall reimburse such LC Disbursement in full on the date such LC Disbursement is made, the unpaid amount thereof shall bear interest, for each day from and including the date such LC Disbursement is made to but excluding the date that the Borrower reimburses such LC Disbursement, at the rate per annum then applicable to ABR Loans; provided that, if the Borrower fails to reimburse such LC Disbursement when due pursuant to paragraph (e) of this Section, then Section 2.13(c) shall apply. Interest accrued pursuant to this paragraph shall be for the account of the Issuing Bank, except that interest accrued on and after the date of payment by any Lender pursuant to paragraph (e) of this Section to reimburse the Issuing Bank shall be for the account of such Lender to the extent of such payment.

(i) Replacement of the Issuing Bank. The Issuing Bank may be replaced at any time by written agreement among the Borrower, the Administrative Agent, the replaced Issuing Bank and the successor Issuing Bank. The Administrative Agent shall notify the Lenders of any such replacement of the Issuing Bank. At the time any such replacement shall become effective, the Borrower shall pay all unpaid fees accrued for the account of the replaced Issuing Bank pursuant to Section 2.12(b). From and after the effective date of any such replacement, (i) the successor Issuing Bank shall have all the rights and obligations of the Issuing Bank under this Agreement with respect to Letters of Credit to be issued thereafter and (ii) references herein to the term “Issuing Bank” shall be deemed to refer to such successor or to any previous Issuing Bank, or to such successor and all previous Issuing Banks, as the context shall require. After the replacement of an Issuing Bank hereunder, the replaced Issuing Bank shall remain a party hereto and shall continue to have all the rights and obligations of an Issuing Bank under this Agreement with respect to Letters of Credit issued by it prior to such replacement, but shall not be required to issue additional Letters of Credit.

(j) Cash Collateralization.

(i) If any Event of Default shall occur and be continuing, on the Business Day that the Borrower receives notice from the Administrative Agent or the Required Lenders (or, if the maturity of the Loans has been accelerated, Lenders with LC Exposure representing greater than sixty-six and two-thirds percent (66²/₃%) of the total LC Exposure) demanding the deposit of cash collateral pursuant to this paragraph, the Borrower shall deposit in the Cash Collateral Account an amount in cash equal to the total LC Exposure as of such date plus any accrued and unpaid interest thereon, if any; provided that the obligation to deposit such cash collateral shall become effective immediately, and such deposit shall become immediately due and payable, without demand or other notice of any kind, upon the occurrence of any Event of Default with respect to the Borrower described in clause (h) or (i) of Article IX.

(ii) All cash collateral provided by the Borrower or any other Credit Party pursuant to the request of the Administrative Agent in accordance with Section 2.20(c) shall be deposited in the Cash Collateral Account.

(iii) Deposits in the Cash Collateral Account made pursuant to either the foregoing paragraph (i) of this Section 2.06(j) or Section 2.20(c) shall be held by the Administrative Agent as collateral for the payment and performance of the Obligations under this Agreement and Borrower hereby grants a security interest in such cash and each deposit account (including the Cash Collateral Account) into which such cash is deposited to secure the Obligations under this Agreement. The Administrative Agent shall have exclusive dominion and control, including the exclusive right of withdrawal, over the Cash Collateral Account. Other than any interest earned on the investment of such deposits, which investments shall be made at the option and sole discretion of the Administrative Agent but in consultation with the Borrower and at the Borrower’s risk and expense, such deposits shall not bear interest. Interest or profits, if any, on such investments shall accumulate in such account. Moneys in such account shall be applied by the Administrative Agent to reimburse the Issuing Bank for LC Disbursements for which it has not been reimbursed and, to the extent not so applied, shall be held for the satisfaction of the reimbursement obligations of the Borrower for the LC Exposure at such time or, if the maturity of the Loans has been accelerated (but subject to the consent of Lenders with LC Exposure representing sixty-six and two-thirds percent (66²/₃%) or more of the total LC Exposure), be applied to satisfy other Obligations under this Agreement and to the extent any excess remains after payment in full in cash of all Obligations and the termination of all Commitments, such excess shall be released to the Borrower.

(v) If the Borrower is required to provide an amount of cash collateral pursuant to either paragraph (i) of this Section 2.06(j) or Section 2.20(c), the amount of such cash collateral (to the extent not applied as aforesaid) shall be returned to the Borrower within one (1) Business Day after (x) in the case of cash collateral provided pursuant to paragraph (i) above, all Events of Default have been cured or waived and (y) in the case of cash collateral provided pursuant to Section 2.20(c), the date on which such cash collateral is no longer required pursuant to Section 2.20(c).

Section 2.07. Funding of Borrowings.

(a) Each Lender shall make each Loan to be made by it hereunder on the proposed date thereof by wire transfer of immediately available funds by 12:00 noon to the account of the Administrative Agent most recently designated by it for such purpose by notice to the Lenders. The Administrative Agent will make such Loans available to the Borrower by promptly crediting the amounts so received, in like funds, to a deposit account of the Borrower designated by the Borrower in the applicable Borrowing Request; provided that ABR Loans made to finance the reimbursement of an LC Disbursement as provided in Section 2.06(e) shall be remitted by the Administrative Agent to the Issuing Bank.

(b) Unless the Administrative Agent shall have received notice from a Lender prior to the proposed time of any Borrowing that such Lender will not make available to the Administrative Agent such Lender’s share of such Borrowing, the Administrative Agent may assume that such Lender has made such share available on such date in accordance with paragraph (a) of this Section and may, in reliance upon such assumption, make available to the Borrower a corresponding amount. In such event, if a Lender has not in fact made its share of the applicable Borrowing available to the Administrative Agent, then the applicable Lender and the Borrower severally agree to pay to the Administrative Agent forthwith on demand such corresponding amount with interest thereon, for each day from and including the date such amount is made available to the Borrower to but excluding the date of payment to the Administrative Agent, at (i) in the case of such Lender, the greater of the Federal Funds Effective Rate and a rate determined by the Administrative Agent in accordance with banking industry rules on interbank compensation or (ii) in the case of the Borrower, the interest rate applicable to ABR Loans. If such Lender pays such amount to the Administrative Agent, then such amount shall constitute such Lender’s Loan included in such Borrowing.

Section 2.08. Interest Elections.

(a) Each Borrowing initially shall be of the Type specified in the applicable Borrowing Request and, in the case of a Eurodollar Borrowing, shall have an initial Interest Period as specified in such Borrowing Request. Thereafter, the Borrower may elect to convert such Borrowing to a different Type or to continue such Borrowing and, in the case of a Eurodollar Borrowing, may elect Interest Periods therefor, all as provided in this Section. The Borrower may elect different options with respect to different portions of the affected Borrowing, in which case each such portion shall be allocated ratably among the Lenders holding the Loans comprising such Borrowing, and the Loans comprising each such portion shall be considered a separate Borrowing.

(b) To make an election pursuant to this Section, the Borrower shall notify the Administrative Agent of such election by telephone by the time that a Borrowing Request would be required under Section 2.05 if the Borrower were requesting a Borrowing of the Type resulting from such election to be made on the effective date of such election. Each such telephonic Interest Election Request shall be irrevocable and shall be confirmed promptly by hand delivery or telecopy to the Administrative Agent of a written Interest Election Request in the form attached hereto as Exhibit D and signed by the Borrower.

(c) Each telephonic and written Interest Election Request shall specify the following information in compliance with Section 2.04:

(i) the Borrowing to which such Interest Election Request applies and, if different options are being elected with respect to different portions thereof, the portions thereof to be allocated to each resulting Borrowing (in which case the information to be specified pursuant to clauses (iii) and (iv) below shall be specified for each resulting Borrowing);

(ii) the effective date of the election made pursuant to such Interest Election Request, which shall be a Business Day;

(iii) whether the resulting Borrowing is to be an ABR Borrowing or a Eurodollar Borrowing; and

(iv) if the resulting Borrowing is a Eurodollar Borrowing, the Interest Period to be applicable thereto after giving effect to such election, which shall be a period contemplated by the definition of the term “Interest Period,” unless otherwise agreed upon by the Borrower and the Administrative Agent.

If any such Interest Election Request requests a Eurodollar Borrowing but does not specify an Interest Period, then the Borrower shall be deemed to have selected an Interest Period of one month’s duration.

(d) Promptly following receipt of an Interest Election Request, the Administrative Agent shall advise each Lender of the details thereof and of such Lender’s portion of each resulting Borrowing.

(e) If the Borrower fails to deliver a timely Interest Election Request with respect to a Eurodollar Borrowing prior to the end of the Interest Period applicable thereto, then, unless such Borrowing is repaid as provided herein, at the end of such Interest Period such Borrowing shall be converted to an ABR Borrowing. Notwithstanding any contrary provision hereof, if an Event of Default has occurred and is continuing and the Administrative Agent, at the request of the Majority Lenders, so notifies the Borrower, then, so long as an Event of Default is continuing (i) no outstanding Borrowing may be converted to or continued as a Eurodollar Borrowing and (ii) unless repaid, each Eurodollar Borrowing shall be converted to an ABR Borrowing at the end of the Interest Period applicable thereto.

Section 2.09. Repayment of Loans; Evidence of Debt.

(a) The Borrower hereby unconditionally promises to pay to the Administrative Agent for the account of each Lender the then unpaid principal amount of each Loan on the Maturity Date.

(b) Each Lender shall maintain in accordance with its usual practice an account or accounts evidencing the indebtedness of the Borrower to such Lender resulting from each Loan made by such Lender, including the amounts of principal and interest payable and paid to such Lender from time to time hereunder.

(c) The Administrative Agent shall maintain accounts in which it shall record (i) the amount of each Loan made hereunder, the Type thereof and the Interest Period applicable thereto, (ii) the amount of any principal or interest due and payable or to become due and payable from the Borrower to each Lender hereunder and (iii) the amount of any sum received by the Administrative Agent hereunder for the account of the Lenders and each Lender’s share thereof.

(d) The entries made in the accounts maintained pursuant to paragraph (b) or (c) of this Section shall be prima facie evidence of the existence and amounts of the obligations recorded therein; provided that the failure of any Lender or the Administrative Agent to maintain such accounts or any error therein shall not in any manner affect the obligation of the Borrower to repay the Loans in accordance with the terms of this Agreement.

(e) Any Lender or Participant may request that Loans made by it be evidenced by a promissory note. In such event, the Borrower shall prepare, execute and deliver to such Lender or Participant a promissory note payable to the order of such Lender or Participant (or, if requested by such Lender or Participant, to such Lender or Participant and its registered assigns) and in the form attached hereto as Exhibit E. Thereafter, the Loans evidenced by such promissory note and interest thereon shall at all times (including after assignment pursuant to Section 11.04) be represented by one or more promissory notes in such form payable to the order of the payee named therein (or, if such promissory note is a registered note, to such payee and its registered assigns).

Section 2.10. Optional Prepayment of Loans.

(a) The Borrower shall have the right at any time and from time to time to prepay any Borrowing in whole and or in part, subject to prior notice in accordance with paragraph (b) of this Section.

(b) The Borrower shall notify the Administrative Agent by telephone (confirmed by telecopy) of any prepayment hereunder (i) in the case of prepayment of a Eurodollar Borrowing, not later than 11:00 a.m., three Business Days before the date of prepayment, or (ii) in the case of prepayment of an ABR Borrowing, not later than 11:00 a.m., one Business Day before the date of prepayment. Each such notice shall be irrevocable and shall specify the prepayment date and the principal amount of each Borrowing or portion thereof to be prepaid; provided that, if a notice of prepayment is given in connection with a conditional notice of termination or reduction of the Aggregate Commitment as contemplated by Section 2.02, then such notice of prepayment may be revoked if such notice of termination or reduction is revoked in accordance with Section 2.02. Promptly following receipt of any such notice relating to a Borrowing, the Administrative Agent shall advise the Lenders of the contents thereof. Each partial prepayment of any Borrowing shall be in an amount that would be permitted in the case of an advance of a Borrowing of the same Type as provided in Section 2.04. Each prepayment of a Borrowing shall be applied ratably to the Loans included in the prepaid Borrowing. Prepayments shall be accompanied by accrued interest to the extent required by Section 2.13.

Section 2.11. Mandatory Prepayment of Loans.

(a) Except as otherwise provided in clauses (b) and (d) of this Section 2.11, in the event a Borrowing Base Deficiency exists, the Borrower shall, within thirty (30) days after written notice from the Administrative Agent to the Borrower of such Borrowing Base Deficiency, either (a) by instruments satisfactory in form and substance to the Administrative Agent, provide the Lenders with additional security satisfactory to the Lenders in their sole discretion to eliminate such Borrowing Base Deficiency, or prepay, without premium or penalty, the principal amount of the Loans in an amount sufficient to eliminate such Borrowing Base Deficiency (or by a combination of such additional security and such prepayment eliminate such Borrowing Base Deficiency), or (b) notify the Administrative Agent that it intends to prepay, without premium or penalty (but subject to any funding indemnification amounts required by Section 2.16), the principal amount of such Borrowing Base Deficiency in not more than three (3) equal monthly installments plus accrued interest thereon and make the first such monthly payment on the 30th day after the Borrower’s receipt of notice of such Borrowing Base Deficiency.

(b) If the Borrower or any Restricted Subsidiary (or any Sponsored Partnership with respect to Attributed Interests) Disposes of any Borrowing Base Properties (whether pursuant to a Disposition of Equity Interests of a Restricted Subsidiary permitted pursuant to Section 7.03(a) or otherwise), the Borrower shall (a) prepay the Borrowings to the extent necessary to eliminate any Borrowing Base Deficiency that may exist or that may have occurred as a result of such Disposition within one (1) Business Day of the date it or any Restricted Subsidiary receives the Net Cash Proceeds from such Disposition and any Net Cash Proceeds in excess of the amount necessary to eliminate any such Borrowing Base Deficiency shall be used within three hundred sixty (360) days after such Disposition to (i) acquire property and assets used or useful in carrying on the business of the Borrower, any Restricted Subsidiary and such Sponsored Partnership or to improve or replace any such property or assets, (ii) prepay the Loans in accordance with the instructions of the Borrower (unless an Event of Default exists in which event any amounts prepaid shall be applied to the Loans at the discretion of the Administrative Agent), or (iii) in the case of any Disposition of Borrowing Base Properties (including Equity Interests of any Restricted Subsidiary held by any Restricted Subsidiary) by any Restricted Subsidiary or any Sponsored Partnership, make a dividend or distribution to the direct holders of its Equity Interests, or (b) in the case of any exchange of Borrowing Base Properties for other Oil and Gas Interests, take all actions reasonably necessary to cause such Oil and Gas Interests received in such exchange to become additional security for the Obligations by instruments satisfactory in form and substance to the Administrative Agent.

(c) If the Borrower or any Restricted Subsidiary (or any Sponsored Partnership with respect to Attributed Interests) enters into any Hedge Modification at any time, the Borrower shall promptly, and in any event within one (1) Business Day of the date it or any Restricted Subsidiary receives the Net Cash Proceeds from such Hedge Modification, apply all of the Net Cash Proceeds received from such Hedge Modification to prepay the Borrowings.

(d) In the event any Borrowing Base Deficiency occurs as a result of a reduction in the Borrowing Base pursuant to Section 3.05 upon an issuance of Senior Notes, the Borrower shall prepay the Loans with the Net Cash Proceeds received as a result of the issuance of such Senior Notes immediately upon receipt of such Net Cash Proceeds to the extent necessary to eliminate such Borrowing Base Deficiency after giving effect to such reduction in the Borrowing Base pursuant to Section 3.05.

(e) In the event the Aggregate Credit Exposure exceeds the Maximum Facility Amount or the Aggregate Commitment at any time that a Borrowing Base Deficiency does not exist, the Borrowers shall immediately prepay, subject to any funding indemnification amounts required by Section 2.16, the principal amount of the Loans to the extent necessary to eliminate such excess.

(f) Amounts applied to the prepayment of Borrowings pursuant to this Section shall be first applied ratably to ABR Borrowings then outstanding and, upon payment in full of all outstanding ABR Borrowings, second, to Eurodollar Borrowings then outstanding, and if more than one Eurodollar Borrowing is then outstanding, to each such Eurodollar Borrowing beginning with the Eurodollar Borrowing with the least number of days remaining in the Interest Period applicable thereto and ending with the Eurodollar Borrowing with the most number of days remaining in the Interest Period applicable thereto. Any prepayments pursuant to this Section shall be accompanied by accrued interest to the extent required by Section 2.13 and any funding indemnification amounts required by Section 2.16.

Section 2.12. Fees.

(a) The Borrower agrees to pay to the Administrative Agent, for the account of each Lender, an unused commitment fee (the “Unused Commitment Fee”) equivalent to the Applicable Rate times the daily average of the total Unused Commitments. Such Unused Commitment Fee shall be calculated on the basis of a year consisting of 360 days. The Unused Commitment Fee shall be payable in arrears on the last day of March, June, September and December of each year, commencing with the first such date to occur after the Effective Date, and on the Maturity Date for any period then ending for which the Unused Commitment Fee shall not have been theretofore paid. In the event the Aggregate Commitment terminates on any date other than the last day of March, June, September or December of any year, the Borrower agrees to pay to the Administrative Agent, for the account of each Lender, on the date of such termination, the pro rata portion of the Unused Commitment Fee due for the period from the last day of the immediately preceding March, June, September or December, as the case may be, to the date such termination occurs.

(b) The Borrower agrees to pay (i) to the Administrative Agent for the account of each Lender a participation fee with respect to its participations in Letters of Credit, which shall accrue at the same Applicable Rate used to determine the interest rate applicable to Eurodollar Loans on the face amount of each Letter of Credit during the period from and including the Effective Date to but excluding the later of the date on which such Lender’s Commitment terminates and the date on which such Lender ceases to have any LC Exposure, and (ii) to the Issuing Bank a fronting fee for each Letter of Credit equal to 0.125% per annum on the face amount of such Letter of Credit during the period from and including the Effective Date to but excluding the later of the date of termination of the Aggregate Commitment and the date on which there ceases to be any LC Exposure (but in no event less than $500 per annum), as well as the Issuing Bank’s standard fees with respect to the issuance, amendment, renewal or extension of any Letter of Credit or processing of drawings thereunder. Participation fees and fronting fees accrued through and including the last day of March, June, September and December of each year shall be payable on the third Business Day following such last day, commencing on the first such date to occur after the Effective Date; provided that all such fees shall be payable on the date on which the Aggregate Commitment terminates and any such fees accruing after the date on which the Aggregate Commitment terminates shall be payable on demand. Any other fees payable to the Issuing Bank pursuant to this paragraph shall be payable within 10 days after demand. All participation fees and fronting fees shall be computed on the basis of a year of 360 days and shall be payable for the actual number of days elapsed (including the first day but excluding the last day).

(c) The Borrower agrees to pay to the Administrative Agent and J.P. Morgan Securities LLC, for their respective accounts, the fees set forth in the Fee Letter payable to the Administrative Agent and J.P. Morgan Securities LLC and such other fees payable in the amounts and at the times separately agreed upon between the Borrower, the Administrative Agent and J.P. Morgan Securities LLC.

(d) All fees payable hereunder shall be paid on the dates due, in immediately available funds, to the Administrative Agent (or to the Issuing Bank, in the case of fees payable to it) for distribution, in the case of Unused Commitment Fees and participation fees, to the Lenders. Fees paid shall not be refundable under any circumstances.

Section 2.13. Interest.

(a) The Loans comprising each ABR Borrowing shall bear interest at the Alternate Base Rate plus the Applicable Rate.

(b) The Loans comprising each Eurodollar Borrowing shall bear interest at the Adjusted LIBO Rate for the Interest Period in effect for such Borrowing plus the Applicable Rate.

(c) Notwithstanding the foregoing, if any principal of or interest on any Loan or any fee or other amount payable by the Borrower hereunder is not paid when due, whether at stated maturity, upon acceleration or otherwise, such overdue amount shall bear interest, after as well as before judgment, at a rate per annum equal to (i) in the case of overdue principal of any Loan, 2% plus the rate otherwise applicable to such Loan as provided in the preceding paragraphs of this Section or (ii) in the case of any other amount, 2% plus the rate applicable to ABR Loans as provided in paragraph (a) of this Section.

(d) Accrued interest on each Loan shall be payable in arrears on each Interest Payment Date for such Loan and upon termination of the Aggregate Commitment and on the Maturity Date; provided that (i) interest accrued pursuant to paragraph (c) of this Section shall be payable on demand, (ii) in the event of any repayment or prepayment of any Loan (other than a prepayment of an ABR Loan prior to the end of the Availability Period at a time when no Borrowing Base Deficiency exists), accrued interest on the principal amount repaid or prepaid shall be payable on the date of such repayment or prepayment and (iii) in the event of any conversion of any Eurodollar Loan prior to the end of the current Interest Period therefor, accrued interest on such Loan shall be payable on the effective date of such conversion.

(e) All interest hereunder shall be computed on the basis of a year of 360 days, except that interest computed by reference to the Alternate Base Rate at times when the Alternate Base Rate is based on the Prime Rate shall be computed on the basis of a year of 365 days (or 366 days in a leap year), and in each case shall be payable for the actual number of days elapsed (including the first day but excluding the last day). The applicable Alternate Base Rate, Adjusted LIBO Rate or LIBO Rate shall be determined by the Administrative Agent, and such determination shall be conclusive absent manifest error.

Section 2.14. Alternate Rate of Interest. If prior to the commencement of any Interest Period for a Eurodollar Borrowing:

(a) the Administrative Agent determines (which determination shall be conclusive absent manifest error) that adequate and reasonable means do not exist for ascertaining the Adjusted LIBO Rate or the LIBO Rate, as applicable, for such Interest Period; or

(b) the Administrative Agent is advised by the Majority Lenders that the Adjusted LIBO Rate or the LIBO Rate, as applicable, for such Interest Period will not adequately and fairly reflect the cost to such Lenders (or Lender) of making or maintaining their Loans (or its Loan) included in such Borrowing for such Interest Period;

then the Administrative Agent shall give notice thereof to the Borrower and the Lenders by telephone or telecopy as promptly as practicable thereafter and, until the Administrative Agent notifies the Borrower and the Lenders that the circumstances giving rise to such notice no longer exist, (i) any Interest Election Request that requests the conversion of any Borrowing to, or continuation of any Borrowing as, a Eurodollar Borrowing shall be ineffective, and (ii) if any Borrowing Request requests a Eurodollar Borrowing, such Borrowing shall be made as an ABR Borrowing.

Section 2.15. Increased Costs.

(a) If any Change in Law shall:

(i) impose, modify or deem applicable any reserve, special deposit or similar requirement against assets of, deposits with or for the account of, or credit extended by, any Lender (except any such reserve requirement reflected in the Adjusted LIBO Rate) or the Issuing Bank; or

(ii) impose on any Lender or the Issuing Bank or the London interbank market any other condition affecting this Agreement or Eurodollar Loans made by such Lender or any Letter of Credit or participation therein;

and the result of any of the foregoing shall be to increase the cost to such Lender of making or maintaining any Eurodollar Loan (or of maintaining its obligation to make any such Loan) or to increase the cost to such Lender or the Issuing Bank of participating in, issuing or maintaining any Letter of Credit or to reduce the amount of any sum received or receivable by such Lender or the Issuing Bank hereunder (whether of principal, interest or otherwise), then the Borrower will pay to such Lender or the Issuing Bank, as the case may be, such additional amount or amounts as will compensate such Lender or the Issuing Bank, as the case may be, for such additional costs incurred or reduction suffered.

(b) If any Lender or the Issuing Bank determines that any Change in Law regarding capital requirements has or would have the effect of reducing the rate of return on such Lender’s or the Issuing Bank’s capital or on the capital of such Lender’s or the Issuing Bank’s holding company, if any, as a consequence of this Agreement or the Loans made by, or participations in Letters of Credit held by, such Lender, or the Letters of Credit issued by the Issuing Bank, to a level below that which such Lender or the Issuing Bank or such Lender’s or the Issuing Bank’s holding company could have achieved but for such Change in Law (taking into consideration such Lender’s or the Issuing Bank’s policies and the policies of such Lender’s or the Issuing Bank’s holding company with respect to capital adequacy), then from time to time the Borrower will pay to such Lender or the Issuing Bank, as the case may be, such additional amount or amounts as will compensate such Lender or the Issuing Bank or such Lender’s or the Issuing Bank’s holding company for any such reduction suffered.

(c) A certificate of a Lender or the Issuing Bank setting forth the amount or amounts necessary to compensate such Lender or the Issuing Bank or its holding company, as the case may be, as specified in paragraph (a) or (b) of this Section shall be delivered to the Borrower and shall be conclusive absent manifest error. The Borrower shall pay such Lender or the Issuing Bank, as the case may be, the amount shown as due on any such certificate within 10 days after receipt thereof.

(d) Failure or delay on the part of any Lender or the Issuing Bank to demand compensation pursuant to this Section shall not constitute a waiver of such Lender’s or the Issuing Bank’s right to demand such compensation; provided that the Borrower shall not be required to compensate a Lender or the Issuing Bank pursuant to this Section for any increased costs or reductions incurred more than 270 days prior to the date that such Lender or the Issuing Bank, as the case may be, notifies the Borrower of the Change in Law giving rise to such increased costs or reductions and of such Lender’s or the Issuing Bank’s intention to claim compensation therefor; provided further that, if the Change in Law giving rise to such increased costs or reductions is retroactive, then the 270-day period referred to above shall be extended to include the period of retroactive effect thereof.

Section 2.16. Break Funding Payments. In the event of (a) the payment of any principal of any Eurodollar Loan other than on the last day of an Interest Period applicable thereto (including as a result of an Event of Default), (b) the conversion of any Eurodollar Loan other than on the last day of the Interest Period applicable thereto, (c) the failure to borrow, convert, continue or prepay any Eurodollar Loan on the date specified in any notice delivered pursuant hereto (regardless of whether such notice may be revoked under Section 2.10(b) and is revoked in accordance therewith), (d) the assignment of any Eurodollar Loan other than on the last day of the Interest Period applicable thereto as a result of a request by the Borrower pursuant to Section 2.19, then, in any such event, the Borrower shall compensate each Lender for the loss, cost and expense attributable to such event. In the case of a Eurodollar Loan, such loss, cost or expense to any Lender shall be deemed to include an amount determined by such Lender to be the excess, if any, of (i) the amount of interest which would have accrued on the principal amount of such Loan had such event not occurred, at the Adjusted LIBO Rate that would have been applicable to such Loan, for the period from the date of such event to the last day of the then current Interest Period therefor (or, in the case of a failure to borrow, convert or continue, for the period that would have been the Interest Period for such Loan), over (ii) the amount of interest which would accrue on such principal amount for such period at the interest rate which such Lender would bid were it to bid, at the commencement of such period, for dollar deposits of a comparable amount and period from other banks in the Eurodollar market. A certificate of any Lender setting forth any amount or amounts that such Lender is entitled to receive pursuant to this Section shall be delivered to the Borrower and shall be conclusive absent manifest error. The Borrower shall pay such Lender the amount shown as due on any such certificate within 10 days after receipt thereof.

Section 2.17. Taxes.

(a) Any and all payments by or on account of any obligation of the Borrower hereunder shall be made free and clear of and without deduction for any Indemnified Taxes or Other Taxes; provided that if the Borrower shall be required to deduct any Indemnified Taxes or Other Taxes from such payments, then (i) the sum payable shall be increased as necessary so that after making all required deductions (including deductions applicable to additional sums payable under this Section) the Administrative Agent, Lender or Issuing Bank (as the case may be) receives an amount equal to the sum it would have received had no such deductions been made, (ii) the Borrower shall make such deductions and (iii) the Borrower shall pay the full amount deducted to the relevant Governmental Authority in accordance with applicable law.

(b) In addition, the Borrower shall pay any Other Taxes to the relevant Governmental Authority in accordance with applicable law.

(c) The Borrower shall indemnify the Administrative Agent, each Lender and the Issuing Bank, within 10 days after written demand therefor, for the full amount of any Indemnified Taxes or Other Taxes paid by the Administrative Agent, such Lender or the Issuing Bank, as the case may be, on or with respect to any payment by or on account of any obligation of the Borrower hereunder (including Indemnified Taxes or Other Taxes imposed or asserted on or attributable to amounts payable under this Section) and any penalties, interest and reasonable expenses arising therefrom or with respect thereto, whether or not such Indemnified Taxes or Other Taxes were correctly or legally imposed or asserted by the relevant Governmental Authority. A certificate as to the amount of such payment or liability delivered to the Borrower by a Lender or the Issuing Bank, or by the Administrative Agent on its own behalf or on behalf of a Lender or the Issuing Bank, shall be conclusive absent manifest error.

(d) As soon as practicable after any payment of Indemnified Taxes or Other Taxes by the Borrower to a Governmental Authority, the Borrower shall deliver to the Administrative Agent the original or a certified copy of a receipt issued by such Governmental Authority evidencing such payment, a copy of the return reporting such payment or other evidence of such payment reasonably satisfactory to the Administrative Agent.

(e) Any Foreign Lender that is entitled to an exemption from or reduction of withholding tax under the law of the jurisdiction in which the Borrower is located, or any treaty to which such jurisdiction is a party, with respect to payments under this Agreement shall deliver to the Borrower (with a copy to the Administrative Agent), at the time or times prescribed by applicable law, such properly completed and executed documentation prescribed by applicable law or reasonably requested by the Borrower as will permit such payments to be made without withholding or at a reduced rate.

(f) If the Administrative Agent or a Lender determines, in its sole discretion, that it has received a refund of any Taxes or Other Taxes as to which it has been indemnified by the Borrower or with respect to which the Borrower has paid additional amounts pursuant to this Section 2.17, it shall pay over such refund to the Borrower (but only to the extent of indemnity payments made, or additional amounts paid, by the Borrower under this Section 2.17 with respect to the Taxes or Other Taxes giving rise to such refund), net of all out-of-pocket expenses of the Administrative Agent or such Lender and without interest (other than any interest paid by the relevant Governmental Authority with respect to such refund); provided, that the Borrower, upon the request of the Administrative Agent or such Lender, agrees to repay the amount paid over to the Borrower (plus any penalties, interest or other charges imposed by the relevant Governmental Authority) to the Administrative Agent or such Lender in the event the Administrative Agent or such Lender is required to repay such refund to such Governmental Authority. This Section shall not be construed to require the Administrative Agent or any Lender to make available its tax returns (or any other information relating to its taxes which it deems confidential) to the Borrower or any other Person.

Section 2.18. Payments Generally; Pro Rata Treatment; Sharing of Set-offs.

(a) The Borrower shall make each payment required to be made by it hereunder (whether of principal, interest, fees or reimbursement of LC Disbursements, or of amounts payable under Section 2.15, Section 2.16 or Section 2.17, or otherwise) prior to 12:00 noon on the date when due, in immediately available funds, without set-off or counterclaim. Any amounts received after such time on any date may, in the discretion of the Administrative Agent, be deemed to have been received on the next succeeding Business Day for purposes of calculating interest thereon. All such payments shall be made to the Administrative Agent at its offices at Mail Code IL1-0010, 10 South Dearborn, Floor 07, Chicago, Illinois, 60603-2003, except payments to be made directly to the Issuing Bank as expressly provided herein and except that payments pursuant to Section 2.15, Section 2.16, Section 2.17 and Section 11.03 shall be made directly to the Persons entitled thereto. The Administrative Agent shall distribute any such payments received by it for the account of any other Person to the appropriate recipient promptly following receipt thereof. If any payment hereunder shall be due on a day that is not a Business Day, the date for payment shall be extended to the next succeeding Business Day, and, in the case of any payment accruing interest, interest thereon shall be payable for the period of such extension. All payments hereunder shall be made in Dollars.

(b) If at any time insufficient funds are received by and available to the Administrative Agent to pay fully all amounts of principal, unreimbursed LC Disbursements, interest and fees then due hereunder, such funds shall be applied (i) first, towards payment of interest and fees then due hereunder, ratably among the parties entitled thereto in accordance with the amounts of interest and fees then due to such parties, and (ii) second, towards payment of principal and unreimbursed LC Disbursements then due hereunder, ratably among the parties entitled thereto in accordance with the amounts of principal and unreimbursed LC Disbursements then due to such parties; provided that in the event such funds are received by and available to the Administrative Agent as a result of the exercise of any rights and remedies with respect to any collateral under the Security Instruments, the parties entitled to a ratable share of such funds pursuant to the foregoing clause (ii) and the determination of each parties’ ratable share shall include, on a pari passu basis, (x) the Lender Counterparties with respect to Lender Hedging Obligations then due and owing to each Lender Counterparty by any Credit Party as a result of the early termination of any transactions under any Swap Agreements (after giving effect to any netting agreements) and (y) any Lender or any of its Affiliates with respect to Cash Management Obligations then due and owing to such Lender or any of its Affiliates by any Credit Party.

(c) If any Lender shall, by exercising any right of set-off or counterclaim or otherwise, obtain payment in respect of any principal of or interest on any of its Loans or participations in LC Disbursements resulting in such Lender receiving payment of a greater proportion of the aggregate amount of its Loans and participations in LC Disbursements and accrued interest thereon than the proportion received by any other Lender, then the Lender receiving such greater proportion shall provide the Administrative Agent with written notice of such set-off or counterclaim and thereafter purchase (for cash at face value) participations in the Loans and

participations in LC Disbursements of other Lenders to the extent necessary so that the benefit of all such payments shall be shared by the Lenders ratably in accordance with the aggregate amount of principal of and accrued interest on their respective Loans and participations in LC Disbursements; provided that (i) if any such participations are purchased and all or any portion of the payment giving rise thereto is recovered, such participations shall be rescinded and the purchase price restored to the extent of such recovery, without interest, and (ii) the provisions of this paragraph shall not be construed to apply to any payment made by the Borrower pursuant to and in accordance with the express terms of this Agreement or any payment obtained by a Lender as consideration for the assignment of or sale of a participation in any of its Loans or participations in LC Disbursements to any assignee or participant, other than to the Borrower or any Subsidiary or Affiliate thereof (as to which the provisions of this paragraph shall apply). The Borrower consents to the foregoing and agrees, to the extent it may effectively do so under applicable law, that any Lender acquiring a participation pursuant to the foregoing arrangements may exercise against the Borrower rights of set-off and counterclaim with respect to such participation as fully as if such Lender were a direct creditor of the Borrower in the amount of such participation.

(d) Unless the Administrative Agent shall have received notice from the Borrower prior to the date on which any payment is due to the Administrative Agent for the account of the Lenders or the Issuing Bank hereunder that the Borrower will not make such payment, the Administrative Agent may assume that the Borrower has made such payment on such date in accordance herewith and may, in reliance upon such assumption, distribute to the Lenders or the Issuing Bank, as the case may be, the amount due. In such event, if the Borrower has not in fact made such payment, then each of the Lenders or the Issuing Bank, as the case may be, severally agrees to repay to the Administrative Agent forthwith on demand the amount so distributed to such Lender or Issuing Bank with interest thereon, for each day from and including the date such amount is distributed to it to but excluding the date of payment to the Administrative Agent, at the greater of the Federal Funds Effective Rate and a rate determined by the Administrative Agent in accordance with banking industry rules on interbank compensation.

(e) If any Lender shall fail to make any payment required to be made by it pursuant to Section 2.06(d) or Section 2.06(e), Section 2.07(b), Section 2.18(d) or Section 11.03(c), then the Administrative Agent may, in its discretion (notwithstanding any contrary provision hereof), (i) apply any amounts thereafter received by the Administrative Agent for the account of such Lender for the benefit of the Administrative Agent or the Issuing Bank to satisfy such Lender’s obligations to it under such Sections until all such unsatisfied obligations are fully paid, and/or (ii) hold any such amounts in a segregated account as cash collateral for, and application to, any future funding obligations of such Lender under any such Section, in the case of each of clauses (i) and (ii) above, in any order as determined by the Administrative Agent in its discretion.

Section 2.19. Mitigation Obligations; Replacement of Lenders.

(a) If any Lender requests compensation under Section 2.15, or if the Borrower is required to pay any additional amount to any Lender or any Governmental Authority for the account of any Lender pursuant to Section 2.17, then such Lender shall use reasonable efforts to designate a different lending office for funding or booking its Loans hereunder or to assign its rights and obligations hereunder to another of its offices, branches or affiliates, if, in the judgment of such Lender, such designation or assignment (i) would eliminate or reduce amounts payable pursuant to Section 2.15 or Section 2.17, as the case may be, in the future and (ii) would not subject such Lender to any unreimbursed cost or expense and would not otherwise be disadvantageous to such Lender. The Borrower hereby agrees to pay all reasonable costs and expenses incurred by any Lender in connection with any such designation or assignment.

(b) If any Lender requests compensation under Section 2.15, or if the Borrower is required to pay any additional amount to any Lender or any Governmental Authority for the account of any Lender pursuant to Section 2.17, then the Borrower may, at its sole expense and effort, upon notice to such Lender and the Administrative Agent, require such Lender to assign and delegate, without recourse (in accordance with and subject to the restrictions contained in Section 11.04), all its interests, rights and obligations under this Agreement to an assignee that shall assume such obligations (which assignee may be another Lender, if a Lender accepts such assignment); provided that (i) the Borrower shall have received the prior written consent of the Administrative Agent (and if a Commitment is being assigned, the Issuing Bank), which consent shall not unreasonably be withheld, (ii) such Lender shall have received payment of an amount equal to the outstanding principal of its Loans and participations in LC Disbursements, accrued interest thereon, accrued fees and all other amounts payable to it hereunder, from the assignee (to the extent of such outstanding principal and accrued interest and fees) or the Borrower (in the case of all other amounts) and (iii) in the case of any such assignment resulting from a claim for compensation under Section 2.15 or payments required to be made pursuant to Section 2.17, such assignment will result in a reduction in such compensation or payments. A Lender shall not be required to make any such assignment and delegation if, prior thereto, as a result of a waiver by such Lender or otherwise, the circumstances entitling the Borrower to require such assignment and delegation cease to apply.

(c) If (i) in connection with any proposed amendment, modification, termination, waiver or consent with respect to any of the provisions of this Agreement or any other Loan Document that requires approval of all of the Lenders under Section 11.02, the consent of Required Lenders shall have been obtained but the consent of one or more of such other Lenders (each a “Non-Consenting Lender”) whose consent is required has not been obtained or (ii) if any Lender becomes a Defaulting Lender; then, in each case, the Borrower may, at its sole expense and effort, upon notice to such Lender and the Administrative Agent, elect to replace such Non-Consenting Lender or Defaulting Lender, as the case may be, as a Lender party to this Agreement in accordance with and subject to the restrictions contained in, and consents required by Section 11.04; provided that (x) the Borrower shall have received the prior written consent of the Administrative Agent (and if a Commitment is being assigned, the Issuing Bank), which consent shall not unreasonably be withheld and (y) such Lender shall have received payment of an amount equal to the outstanding principal of its Loans and participations in LC Disbursements, accrued interest thereon, accrued fees and all other amounts payable to it hereunder, from the assignee (to the extent of such outstanding principal and accrued interest and fees) or the Borrower (in the case of all other amounts). A Lender shall not be required to make any such assignment and delegation if, prior thereto, as a result of a waiver by such Lender or otherwise, the circumstances entitling the Borrower to require such assignment and delegation cease to apply or, in the case of a Defaulting Lender, such Lender is no longer a Defaulting Lender.

Section 2.20. Defaulting Lenders. Notwithstanding any provision of this Agreement to the contrary, if any Lender becomes a Defaulting Lender, then the following provisions shall apply for so long as such Lender is a Defaulting Lender:

(a) the fees shall cease to accrue on the unfunded portion of the Commitment of such Defaulting Lender pursuant to Section 2.12(a);

(b) the Commitment and Credit Exposure of such Defaulting Lender shall not be included in determining whether the Required Lenders or the Majority Lenders have taken or may take any action hereunder (including any consent to any amendment, waiver or other modification pursuant to Section 11.02), provided that (i) any waiver, consent, amendment or modification requiring the consent of such Lender or each affected Lender shall require the consent of such Defaulting Lender and (ii) any waiver, consent, amendment or modification requiring the consent of all Lenders shall require the consent of such Defaulting Lender (except in respect of any increases in the Borrowing Base or the Maximum Facility Amount),

(c) if any LC Exposure exists at the time such Lender becomes a Defaulting Lender then:

(i) all or any part of the LC Exposure of such Defaulting Lender shall be reallocated among the non-Defaulting Lenders in accordance with their respective Applicable Percentages but only to the extent (x) the sum of all non-Defaulting Lenders’ Credit Exposures plus such Defaulting Lender’s LC Exposure does not exceed the total of all non-Defaulting Lenders’ Commitments and (y) the conditions set forth in Section 5.02 are satisfied at that time;

(ii) if the reallocation described in clause (i) above cannot, or can only partially, be effected, the Borrower shall, within one (1) Business Day following notice by the Administrative Agent, cash collateralize for the benefit of the Issuing Bank only the Borrower’s obligations corresponding to such Defaulting Lender’s LC Exposure (after giving effect to any partial reallocation pursuant to clause (i) above) in accordance with the procedures set forth in Section 2.06(j) for so long as such LC Exposure is outstanding;

(iii) if the Borrower cash collateralizes any portion of such Defaulting Lender’s LC Exposure pursuant to clause (ii) above, the Borrower shall not be required to pay any fees to such Defaulting Lender pursuant to Section 2.12(b) with respect to such Defaulting Lender’s LC Exposure during the period such Defaulting Lender’s LC Exposure is cash collateralized;

(iv) if the LC Exposure of the non-Defaulting Lenders is reallocated pursuant to clause (i) above, then the fees payable to the Lenders pursuant to Section 2.12(a) and Section 2.12(b) shall be adjusted in accordance with such non-Defaulting Lenders’ Applicable Percentages; and

(v) if all or any portion of such Defaulting Lender’s LC Exposure is neither cash collateralized nor reallocated pursuant to clauses (i) or (ii) above, then, without prejudice to any rights or remedies of the Issuing Bank or any Lender hereunder, all letter of credit fees payable under Section 2.12(b) with respect to such Defaulting Lender’s LC Exposure shall be payable to the Issuing Bank until and to the extent that such LC Exposure is cash collateralized and/or reallocated; and

(d) so long as such Lender is a Defaulting Lender, the Issuing Bank shall not be required to issue, amend, or increase any Letter of Credit, unless it is satisfied that the related exposure and the Defaulting Lender’s then outstanding LC Exposure will be 100% covered by the Commitments of the non-Defaulting Lenders and/or cash collateral will be provided by the Borrower in accordance with Section 2.20(c), and any participating interests in any newly issued or increased Letter of Credit shall be allocated among non-Defaulting Lenders in a manner consistent with Section 2.20(c)(i) (and such Defaulting Lender shall not participate therein).

If (i) a Bankruptcy Event with respect to a Parent of any Lender shall occur following the date hereof and for so long as such event shall continue or (ii) the Issuing Bank has a good faith belief that any Lender has defaulted in fulfilling its obligations under one or more other agreements in which such Lender commits to extend credit, the Issuing Bank shall not be required to issue, amend, or increase any Letter of Credit, unless the Issuing Bank shall have entered into arrangements with the Borrower or such Lender, satisfactory to the Issuing Bank to defease any risk to it in respect of such Lender hereunder.

In the event that the Administrative Agent, the Borrower, and the Issuing Bank each agrees that a Defaulting Lender has adequately remedied all matters that caused such Lender to be a Defaulting Lender, then the LC Exposure of the Lenders shall be readjusted to reflect the inclusion of such Lender’s Commitment and on such date such Lender shall purchase at par such of the Loans of the other Lenders as the Administrative Agent shall determine may be necessary in order for such Lender to hold such Loans in accordance with its Applicable Percentage.

Article III

Borrowing Base

Section 3.01. Reserve Report; Proposed Borrowing Base. During the period from the Effective Date until the first Redetermination after the Effective Date, the Borrowing Base shall be $350,000,000 (the “Initial Borrowing Base”). As soon as available and in any event by April 1 and October 1 of each year, beginning April 1, 2011, the Borrower shall deliver to the Administrative Agent and each Lender a Reserve Report, prepared as of the immediately preceding December 31 and June 30, respectively, in form and substance reasonably satisfactory to the Administrative Agent and prepared by an Approved Petroleum Engineer (or, in the case of the Reserve Report due on October 1 of each year, by petroleum engineers employed by the Borrower), said Reserve Report to utilize economic and pricing parameters established from time to time by the Administrative Agent, together with such other information, reports and data concerning the value of the Borrowing Base Properties as the Administrative Agent shall deem reasonably necessary to determine the value of such Borrowing Base Properties. Simultaneously with the delivery to the Administrative Agent and the Lenders of each Reserve Report, the Borrower shall submit to the Administrative Agent and each Lender the Borrower’s requested amount of the Borrowing Base as of the next Redetermination Date. Promptly after the receipt by the Administrative Agent of such Reserve Report and the Borrower’s requested amount for the Borrowing Base, the Administrative Agent shall submit to the Lenders a recommended amount of the Borrowing Base to become effective for the period commencing on the next Redetermination Date.

Section 3.02. Scheduled Redeterminations of the Borrowing Base; Procedures and Standards. Based in part on the Reserve Reports made available to the Administrative Agent and the Lenders pursuant to Section 3.01, the Lenders shall redetermine the Borrowing Base on or prior to the next Redetermination Date (or such date promptly thereafter as reasonably possible based on the engineering and other information available to the Lenders). Any Borrowing Base which becomes effective as a result of any Redetermination of the Borrowing Base shall be subject to the following restrictions: (a) such Borrowing Base shall not exceed the amount of the Borrowing Base requested by the Borrower, (b) such Borrowing Base shall not exceed the Maximum Facility Amount, (c) to the extent such Borrowing Base represents an increase in the Borrowing Base in effect prior to such Redetermination, such Borrowing Base must be approved by all Lenders, and (d) to the extent such Borrowing Base represents a decrease in the Borrowing Base in effect prior to such Redetermination or a reaffirmation of such prior Borrowing Base, such Borrowing Base must be approved by the Administrative Agent and Required Lenders. If a redetermined Borrowing Base is not approved by the Administrative Agent and Required Lenders within twenty (20) days after the submission to the Lenders by the Administrative Agent of its recommended Borrowing Base pursuant to Section 3.01, or by all Lenders within such twenty (20) day period in the case of any increase in the Borrowing Base, the Administrative Agent shall notify each Lender that the recommended Borrowing Base has not been approved and request that each Lender submit to the Administrative Agent within ten (10) days thereafter its proposed Borrowing Base. Promptly following the 10^th day after the Administrative Agent’s request for each Lender’s proposed Borrowing Base, the Administrative Agent shall determine the Borrowing Base for such Redetermination by calculating the highest Borrowing Base then acceptable to the Administrative Agent and a number of Lenders sufficient to constitute Required Lenders (or all Lenders in the case of an increase in the Borrowing Base). Each Redetermination shall be made by the Lenders in their sole discretion, but based on the Administrative Agent’s and such Lender’s usual and customary procedures for evaluating Oil and Gas Interest as such exist at the time of such Redetermination, and including adjustments to reflect the effect of any Swap Agreements of the Borrower and the Restricted Subsidiaries as such exist at the time of such Redetermination. The Borrower acknowledges and agrees that each Redetermination shall be based upon the loan collateral value which each Agent and each Lender in its sole discretion (using such methodology, assumptions and discount rates as the Administrative Agent and such Lender customarily uses in assigning collateral value to Oil and Gas Interests) assigns to the Borrowing Base Properties at the time in question and based upon such other credit factors consistently applied (including, without limitation, the assets, liabilities, cash flow, business, properties, prospects, management and ownership of the Credit Parties) as the Administrative Agent and such Lender customarily considers in evaluating similar oil and gas credits. It is expressly understood that the Administrative Agent and Lenders have no obligation to designate the Borrowing Base at any particular amounts, except in the exercise of their discretion, whether in relation to the Aggregate Commitment or otherwise. If the Borrower does not furnish all information, reports and data required to be delivered by any date specified in this Article III, unless such failure is not the fault of the Borrower, the Administrative Agent and Lenders may nonetheless designate the Borrowing Base at any amounts which the Administrative Agent and Lenders in their reasonable discretion determine and may redesignate the Borrowing Base from time to time thereafter until the Administrative Agent and Lenders receive all such information, reports and data, whereupon the Administrative Agent and Lenders shall designate a new Borrowing Base, as described above.

Section 3.03. Special Redeterminations. In addition to Scheduled Redeterminations, the Borrower shall be permitted to request a Special Redetermination of the Borrowing Base once between each Scheduled Redetermination and the Required Lenders shall be permitted to request a Special Redetermination at any time. Any request by Borrower pursuant to this Section 3.03 shall be submitted to the Administrative Agent and each Lender and at the time of such request (or within twenty (20) days thereafter in the case of the Reserve Report) Borrower shall (1) deliver to the Administrative Agent and each Lender a Reserve Report prepared as of a date prior to the date of such request that is reasonably acceptable to the Administrative Agent and such other information which the Administrative Agent shall reasonably request, and (2) notify the Administrative Agent and each Lender of the Borrowing Base requested by Borrower in connection with such Special Redetermination. Any request by Required Lenders pursuant to this Section 3.03 shall be submitted to the Administrative Agent and the Borrower. Any Special Redetermination shall be made by the Administrative Agent and Lenders in accordance with the procedures and standards set forth in Section 3.02; provided that no Reserve Report is required to be delivered to the Administrative Agent or the Lenders in connection with any Special Redetermination requested by the Required Lenders pursuant to this Section 3.03.

Section 3.04. Notice of Redetermination. Promptly following any Redetermination of the Borrowing Base, the Administrative Agent shall notify the Borrower of the amount of the redetermined Borrowing Base, which Borrowing Base shall be effective as of the date specified in such notice, and such Borrowing Base shall remain in effect for all purposes of this Agreement until the next Redetermination.

Section 3.05. Additional Reductions in Borrowing Base. Unless otherwise waived in writing by the Required Lenders, upon the issuance of any Senior Notes by any Credit Party in accordance with Section 7.01(h) (other than any Permitted Refinancing that extends, refinances, renews, replaces, defeases or refunds existing Senior Notes), the Borrowing Base then in effect shall automatically be reduced by the lesser of (a) $250 for each $1,000 in stated principal amount of such Senior Notes on the date such Senior Notes are issued and (b) such other amount, if any, determined by the Required Lenders in their sole discretion prior to the issuance of such Senior Notes.

Article IV

Representations and Warranties

Each Credit Party represents and warrants to the Lenders that:

Section 4.01. Organization; Powers. Each Credit Party is duly organized, validly existing and in good standing under the laws of the jurisdiction of its organization, has all requisite power and authority to carry on its business as now conducted and, except where the failure to do so, individually or in the aggregate, could not reasonably be expected to result in a Material Adverse Effect, is qualified to do business in, and is in good standing in, every jurisdiction where such qualification is required.

Section 4.02. Authorization; Enforceability. The Transactions are within each Credit Party’s corporate, limited liability company or partnership powers and have been duly authorized by all necessary corporate, limited liability company or partnership and, if required, stockholder action. This Agreement has been duly executed and delivered by each Credit Party and constitutes a legal, valid and binding obligation of each Credit Party, enforceable in accordance with its terms, subject to applicable bankruptcy, insolvency, reorganization, moratorium or other laws affecting creditors’ rights generally and subject to general principles of equity, regardless of whether considered in a proceeding in equity or at law.

Section 4.03. Governmental Approvals; No Conflicts. The Transactions (a) do not require any consent or approval of, registration or filing with, or any other action by, any Governmental Authority, except such as have been obtained or made and are in full force and effect or have been made or to be made in connection with the filing of the Liens to secure the Obligations, (b) will not violate any applicable law or regulation or the charter, by-laws or other Organizational Documents of the Borrower, any Restricted Subsidiary or any Sponsored Partnership or any order of any Governmental Authority, (c) will not violate or result in a default under any indenture, agreement or other instrument evidencing Material Indebtedness or a Material Sales Contract binding upon the Borrower or any Restricted Subsidiary or any of their respective assets, or give rise to a right thereunder to require any payment to be made by the Borrower or any Restricted Subsidiary, and (d) will not result in the creation or imposition of any Lien on any asset of the Borrower, any Restricted Subsidiary or any Sponsored Partnership not otherwise permitted under Section 7.02.

Section 4.04. Financial Condition; No Material Adverse Change.

(a) The Borrower has heretofore furnished to the Lenders the audited consolidated balance sheet and related statements of income, stockholders equity and cash flows of the Borrower and its Consolidated Subsidiaries (i) as of and for the fiscal year ended December 31, 2009, reported on by PricewaterhouseCoopers L.L.P., and (ii) as of and for the fiscal quarter ended June 30, 2010, certified by its Financial Officer. Such financial statements present fairly, in all material respects, the financial position and results of operations and cash flows of the Borrower and its Consolidated Subsidiaries as of such dates and for such periods in accordance with GAAP, subject to year-end audit adjustments and the absence of footnotes in the case of the statements referred to in clause (ii) above.

(b) Since December 31, 2009, there has been no material adverse change in the business, assets, operations or condition, financial or otherwise, of the Borrower and its Restricted Subsidiaries, taken as a whole.

Section 4.05. Properties.

(a) Except as otherwise provided in Section 4.15 with respect to Oil and Gas Interests, the Borrower and each Restricted Subsidiary has good title to, or valid leasehold interests in, all such real and personal property material to its business, except for (i) minor defects in title that do not, in the aggregate, interfere with its ability to conduct its business as currently conducted or to utilize such properties for their intended purposes and (ii) Liens permitted under Section 7.02.

(b) The Borrower and each Restricted Subsidiary owns, or is licensed to use, all trademarks, tradenames, copyrights, patents and other intellectual property material to its business, and the use thereof by the Borrower and such Restricted Subsidiaries, as the case may be, does not infringe upon the rights of any other Person, except for any such infringements that, individually or in the aggregate, could not reasonably be expected to result in a Material Adverse Effect.

Section 4.06. Litigation and Environmental Matters.

(a) There are no actions, suits or proceedings by or before any arbitrator or Governmental Authority pending against or, to the knowledge of the Borrower, threatened against or affecting the Borrower, any Restricted Subsidiary or any Sponsored Partnership, (i) as to which there is a reasonable possibility of an adverse determination and that, if adversely determined, could reasonably be expected, individually or in the aggregate, to result in a Material Adverse Effect after taking into account insurance proceeds or other recoveries from third parties actually received (other than the Disclosed Matters) or (ii) that involve this Agreement or the Transactions.

(b) Except for the Disclosed Matters and except with respect to any other matters that, individually or in the aggregate, could not reasonably be expected to result in a Material Adverse Effect after taking into account insurance proceeds or other recoveries from third parties actually received, neither the Borrower nor any Restricted Subsidiary nor any Sponsored Partnership, to the Borrower’s knowledge, (i) has failed to comply with any Environmental Law or to obtain, maintain or comply with any permit, license or other approval required under any Environmental Law, (ii) has become subject to any Environmental Liability, (iii) has received notice of any claim with respect to any Environmental Liability or (iv) knows of any basis for any Environmental Liability.

(c) Since the date of this Agreement, there has been no change in the status of the Disclosed Matters that, individually or in the aggregate, has resulted in, or materially increased the likelihood of, a Material Adverse Effect.

Section 4.07. Compliance with Laws and Agreements. The Borrower and each Restricted Subsidiary is in compliance with all laws, regulations and orders of any Governmental Authority applicable to it or its property and all indentures, agreements and other instruments binding upon it or its property, except where the failure to do so, individually or in the aggregate, could not reasonably be expected to result in a Material Adverse Effect.

Section 4.08. Investment Company Status. Neither the Borrower nor any Restricted Subsidiary is an “investment company” as defined in, or subject to regulation under, the Investment Company Act of 1940.

Section 4.09. Taxes. The Borrower and each Restricted Subsidiary has timely filed or caused to be filed all Tax returns and reports required to have been filed and has paid or caused to be paid all Taxes required to have been paid by it, except (a) Taxes that are being contested in good faith by appropriate proceedings and for which the Borrower or such Restricted Subsidiary, as applicable, has set aside on its books adequate reserves or (b) to the extent that the failure to do so could not reasonably be expected to result in a Material Adverse Effect.

Section 4.10. ERISA. No ERISA Event has occurred or is reasonably expected to occur that, when taken together with all other such ERISA Events for which liability is reasonably expected to occur, could reasonably be expected to result in a Material Adverse Effect. The present value of all accumulated benefit obligations under each Plan (based on the assumptions used for purposes of FASB Statement 87) did not, as of the date of the most recent financial statements reflecting such amounts, exceed by more than $1,000,000 the fair market value of the assets of such Plan, and the present value of all accumulated benefit obligations of all underfunded Plans (based on the assumptions used for purposes of FASB Statement 87) did not, as of the date of the most recent financial statements reflecting such amounts, exceed by more than $1,000,000 the fair market value of the assets of all such underfunded Plans.

Section 4.11. Disclosure. The Borrower has disclosed to the Lenders all agreements, instruments and corporate or other restrictions to which it or any Restricted Subsidiary is subject, and all other matters known to it, that, individually or in the aggregate, could reasonably be expected to result in a Material Adverse Effect. None of the other reports, financial statements, certificates or other information furnished by or on behalf of the Borrower or any Restricted Subsidiary to the Administrative Agent or any Lender in connection with the negotiation of this Agreement or delivered hereunder (as modified or supplemented by other information so furnished) when taken as a whole contains any material misstatement of fact or omits to state any material fact necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading as of the date made or deemed made; provided that, with respect to projected financial information, the Borrower represents only that such information was prepared in good faith based on assumptions believed to be reasonable at the time.

Section 4.12. Labor Matters. There are no strikes, lockouts or slowdowns against the Borrower or any of its Restricted Subsidiaries pending or, to the knowledge of the Borrower, threatened that could reasonably be expected to have a Material Adverse Effect. The hours worked by and payments made to employees of the Borrower and its Restricted Subsidiaries have not been in violation of the Fair Labor Standards Act or any other Law dealing with such matters to the extent that such violation could reasonably be expected to have a Material Adverse Effect.

Section 4.13. Capitalization. Schedule 4.13 lists as of the Effective Date, (a) for the Borrower and each Restricted Subsidiary, its full legal name and its jurisdiction of organization, (b) for each Restricted Subsidiary, the number of shares of capital stock or other Equity Interests outstanding and the owner(s) of such shares or Equity Interests and (c) with respect to each Sponsored Partnership, the Partnership Interests owned by each Credit Party in such Sponsored Partnership.

Section 4.14. Margin Stock. Neither the Borrower nor any Restricted Subsidiary is engaged principally, or as one of its important activities, in the business of extending credit for the purpose of purchasing or carrying margin stock (within the meaning of Regulation U issued by the Federal Reserve Board), and no part of the proceeds of any Loan will be used to purchase or carry any margin stock or to extend credit to others for the purpose of purchasing or carrying margin stock.

Section 4.15. Oil and Gas Interests. Each Credit Party has good and defensible title to all proved reserves included in the Direct Interests (for purposes of this Section 4.15, “proved Direct Interests”) described in the most recent Reserve Report provided to the Administrative Agent (other than such proved reserves that have been subsequently disposed of in compliance with this Agreement), free and clear of all Liens except Liens permitted pursuant to Section 7.02. Each Sponsored Partnership has good and defensible title to all proved reserves included in the Attributed Interests (for purposes of this Section 4.15, “proved Attributed Interests”) described in the most recent Reserve Report provided to the Administrative Agent (other than such proved reserves that have been subsequently disposed of in compliance with this Agreement), free and clear of all Liens except Liens permitted pursuant to Section 7.02. All such proved Oil and Gas Interests are valid, subsisting, and in full force and effect in all material respects, and all rentals, royalties, and other amounts due and payable in respect thereof have been duly paid except for such rentals, royalties and other amounts that are amounts being contested in good faith by appropriate proceedings and for which the Borrower or the applicable Restricted Subsidiary or Sponsored Partnership has set aside on its books adequate reserves. Without regard to any consent or non-consent provisions of any joint operating agreement covering any Credit Party’s proved Direct Interests, or any Sponsored Partnership’s proved Attributed Interests, such Credit Party’s share and such Sponsored Partnership’s share, as the case may be, of (a) the costs for each proved Oil and Gas Interest described in the Reserve Report (other than for such proved Oil and Gas Interests that have been subsequently disposed of in compliance with this Agreement) is not materially greater than the decimal fraction set forth in the Reserve Report, before and after payout, as the case may be, and described therein by the respective designations “working interests,” “WI,” “gross working interest,” “GWI,” or similar terms (except in such cases where there is a corresponding increase in the net revenue interest), and (b) production from, allocated to, or attributed to each such proved Oil and Gas Interest is not materially less than the decimal fraction set forth in the Reserve Report, before and after payout, as the case may be, and described therein by the designations “net revenue interest,” “NRI,” or similar terms. The wells drilled in respect of proved producing Oil and Gas Interests described in the Reserve Report (other than wells drilled in respect of such proved producing Oil and Gas Interests that have been subsequently disposed of in compliance with this Agreement) (1) are capable of, and are presently, either producing Hydrocarbons in commercially profitable quantities or in the process of being worked over or enhanced, and the Credit Party or Sponsored Partnership that owns such proved producing Oil and Gas Interests is currently receiving payments for its share of production, with no funds in respect of any thereof being presently held in suspense, other than any such funds being held in suspense pending delivery of appropriate division orders, and (2) have been drilled, bottomed, completed, and operated in compliance with all applicable laws, in the case of clauses (1) and (2), except where any failure to satisfy clause (1) or to comply with clause (2) would not have a Material Adverse Effect, and no such well which is currently producing Hydrocarbons is subject to any material penalty in production by reason of such well having produced in excess of its allowable production.

Section 4.16. Insurance. The certificate signed by a Responsible Officer that attests to the existence of, and summarizes, the property and casualty insurance program maintained by the Credit Parties that has been furnished by the Borrower to the Administrative Agent and the Lenders as of the Effective Date, is complete and accurate in all material respects as of the Effective Date and demonstrates the Borrower’s and the Restricted Subsidiaries’ compliance with Section 6.05.

Section 4.17. Solvency.

(a) Immediately after the consummation of the Transactions and immediately following the making of the initial Borrowing, if any, made on the Effective Date and after giving effect to the application of the proceeds thereof, (1) the fair value of the assets of the Credit Parties on a consolidated basis, at a fair valuation, will exceed the debts and liabilities, subordinated, contingent or otherwise, of the Credit Parties on a consolidated basis; (2) the present fair saleable value of the real and personal property of the Credit Parties on a consolidated basis will be greater than the amount that will be required to pay the probable liability of the Credit Parties on a consolidated basis on their debts and other liabilities, subordinated, contingent or otherwise, as such debts and other liabilities become absolute and matured; (3) the Credit Parties on a consolidated basis will be able to pay their debts and liabilities, subordinated, contingent or otherwise, as such debts and liabilities become absolute and matured; and (4) the Credit Parties on a consolidated basis will not have unreasonably small capital with which to conduct the businesses in which they are engaged as such businesses are now conducted and are proposed to be conducted after the date hereof.

(b) The Credit Parties do not intend to, and do not believe that they will, incur debts beyond their ability to pay such debts as they mature, taking into account the timing of and amounts of cash to be received by it and the timing of the amounts of cash to be payable on or in respect of its Indebtedness.

Article V

Conditions

Section 5.01. Effective Date. The obligations of the Lenders and Lender Counterparties to continue the Original Loans and the Existing Swap Agreements and the obligations of the Lenders to make Loans and of the Issuing Bank to permit the Existing Letters of Credit to remain outstanding and to issue Letters of Credit hereunder shall not become effective until the date on which each of the following conditions is satisfied (or waived in accordance with Section 11.02):

(a) The Administrative Agent (or its counsel) shall have received from each party hereto either (i) a counterpart of this Agreement signed on behalf of such party or (ii) written evidence satisfactory to the Administrative Agent (which may include telecopy or electronic transmission of a signed signature page of this Agreement) that such party has signed a counterpart of this Agreement.

(b) The Administrative Agent shall have received a favorable written opinion (addressed to the Administrative Agent and the Lenders and dated the Effective Date) of (i) Andrews & Kurth LLP, counsel for the Credit Parties, substantially in the form of Exhibit B and (ii) local counsel for the Credit Parties in West Virginia and Nevada, in form and substance satisfactory to the Administrative Agent, and, in each case, covering such other matters relating to the Credit Parties, this Agreement or the Transactions as the Majority Lenders shall reasonably request. The Credit Parties hereby request such counsels to deliver such opinions.

(c) The Administrative Agent shall have received such documents and certificates as the Administrative Agent or its counsel may reasonably request relating to the organization, existence and good standing of each Credit Party, the authorization of the Transactions and any other legal matters relating to the Credit Parties, this Agreement or the Transactions, all in form and substance satisfactory to the Administrative Agent and its counsel.

(d) The Administrative Agent shall have received a certificate, dated the Effective Date and signed by a Responsible Officer of the Borrower, confirming that the Credit Parties have (i) complied with the conditions set forth in paragraphs (a), (b), and (c) of Section 5.02, (ii) complied with the covenants set forth in Section 6.05 (and demonstrating such compliance by the attachment of an insurance summary and insurance certificates evidencing the coverage described in such summary), (iii) complied with the requirements of Section 6.09 and Section 6.10, and (iv) complied with the conditions set forth in paragraphs (k) and (l) of this Section 5.01.

(e) The Administrative Agent, the Lenders and J.P. Morgan Securities LLC shall have received all fees and other amounts due and payable on or prior to the Effective Date, and, to the extent invoiced, reimbursement or payment of all out-of-pocket expenses required to be reimbursed or paid by the Borrower hereunder, including all fees, expenses and disbursements of counsel for the Administrative Agent to the extent invoiced on or prior to the Effective Date, together with such additional amounts as shall constitute such counsel’s reasonable estimate of expenses and disbursements to be incurred by such counsel in connection with the recording and filing of Mortgages (and/or Mortgage amendments) and financing statements; provided, that, such estimate shall not thereafter preclude further settling of accounts between the Borrower and the Administrative Agent.

(f) The Administrative Agent shall have received the Security Agreement, duly executed and delivered by the appropriate Credit Parties, together with such other assignments, conveyances, amendments (other than, for the avoidance of doubt, any Mortgage amendments required to be delivered pursuant to the last sentence of Section 6.09), agreements and other writings, including, without limitation, UCC-1 financing statements and control agreements, creating Liens prior and superior in right to any other Person, subject to the Liens permitted under Section 7.02, in all or substantially all of the assets of each Credit Party, including all of the Equity Interests of each Restricted Subsidiary and Sponsored Partnership now or hereafter owned by Borrower or any Restricted Subsidiary.

(g) The Administrative Agent shall have received promissory notes duly executed by the Borrower for each Lender that has requested the delivery of a promissory note pursuant to and in accordance with Section 2.09(e).

(h) In the event that any Loans are made on the Effective Date, the Administrative Agent shall have received a Borrowing Request acceptable to the Administrative Agent and in accordance with Section 2.05 setting forth the Loans requested by the Borrower on the Effective Date, the Type and amount of each Loan and the accounts to which such Loans are to be funded.

(i) If the initial Borrowing includes the issuance of a Letter of Credit, the Administrative Agent shall have received a written request in accordance with Section 2.06 of this Agreement.

(j) The Administrative Agent shall have received such financing statements (including, without limitation, the financing statements referenced in subclause (f) above) as Administrative Agent shall specify to fully evidence and perfect all Liens contemplated by the Loan Documents, all of which shall be filed of record in such jurisdictions as the Administrative Agent shall require in its sole discretion.

(k) Each Credit Party shall have obtained all approvals required from any Governmental Authority and all consents of other Persons, in each case that are necessary or advisable in connection with the Transactions and each of the foregoing shall be in full force and effect and in form and substance reasonably satisfactory to the Administrative Agent. All applicable waiting periods shall have expired without any action being taken or threatened by any competent authority which would restrain, prevent or otherwise impose adverse conditions on the transactions contemplated by the Loan Documents or the financing thereof and no action, request for stay, petition for review or rehearing, reconsideration, or appeal with respect to any of the foregoing shall be pending, and the time for any applicable agency to take action to set aside its consent on its own motion shall have expired.

(l) There shall not exist any action, suit, investigation, litigation or proceeding or other legal or regulatory developments, pending or threatened in any court or before any arbitrator or Governmental Authority that, in the reasonable opinion of Administrative Agent, singly or in the aggregate, materially impairs the Transactions, the financing thereof or any of the other transactions contemplated by the Loan Documents or that could reasonably be expected to result in a Material Adverse Effect.

(m) All partnership, corporate and other proceedings taken or to be taken in connection with the Transactions and all documents incidental thereto shall be reasonably satisfactory in form and substance to Administrative Agent and its counsel, and Administrative Agent and such counsel shall have received all such counterpart originals or certified copies of such documents as Administrative Agent may reasonably request.

(n) The Administrative Agent and the Lenders shall have received the Projections and all of the financial statements described in Section 4.04(a).

(o) The Administrative Agent shall have received Mortgages and title information, in each case, reasonably satisfactory to the Administrative Agent with respect to the Borrowing Base Properties, or the portion thereof, as required by Section 6.09 and 6.10.

(p) The Administrative Agent shall have received such other instruments and documents incidental and appropriate to the transactions provided for herein as the Administrative Agent or their special counsel may reasonably request prior to the Effective Date, and all such documents shall be in form and substance satisfactory to the Administrative Agent.

The Administrative Agent shall notify the Borrower and the Lenders of the Effective Date, and such notice shall be conclusive and binding. Notwithstanding the foregoing, the obligations of the Lenders to continue the Original Loans and the Existing Swap Agreements and the obligations of the Lenders to make Loans and of the Issuing Bank to permit the Existing Letters of Credit to remain outstanding and to issue Letters of Credit hereunder shall not become effective unless each of the foregoing conditions is satisfied (or waived pursuant to Section 11.02) at or prior to 3:00 p.m. on November 5, 2010 (and, in the event such conditions are not so satisfied or waived, the Aggregate Commitment shall terminate at such time).

Section 5.02. Each Credit Event. The obligation of each Lender to make a Loan on the occasion of any Borrowing, and of the Issuing Bank to issue, amend, renew or extend any Letter of Credit, is subject to the satisfaction of the following conditions:

(a) The representations and warranties of each Credit Party set forth in this Agreement and the other Loan Documents shall be true and correct on and as of the date of such Borrowing or the date of issuance, amendment, renewal or extension of such Letter of Credit, as applicable except to the extent that such representations and warranties specifically refer to an earlier date, in which case they shall be true and correct as of such earlier date.

(b) At the time of and immediately after giving effect to such Borrowing or the issuance, amendment, renewal or extension of such Letter of Credit, as applicable, no Default shall have occurred and be continuing.

(c) At the time of and immediately after giving effect to such Borrowing or the issuance, amendment, renewal or extension of such Letter of Credit, as applicable, no Borrowing Base Deficiency exists or would be caused thereby.

Each Borrowing and each issuance, amendment, renewal or extension of a Letter of Credit shall be deemed to constitute a representation and warranty by the Borrower on the date thereof as to the matters specified in paragraphs (a), (b) and (c) of this Section.

Article VI

Affirmative Covenants

Until the Aggregate Commitment has expired or been terminated and the principal of and interest on each Loan and all fees payable hereunder shall have been paid in full and all Letters of Credit shall have expired or terminated and all LC Disbursements shall have been reimbursed, each Credit Party covenants and agrees with the Lenders that:

Section 6.01. Financial Statements; Other Information. The Borrower will furnish to the Administrative Agent and each Lender:

(a) within 90 days after the end of each fiscal year of the Borrower, the audited consolidated balance sheet and related statements of operations, stockholders’ equity and cash flows of the Borrower and its Consolidated Subsidiaries as of the end of and for such year, setting forth in each case in comparative form the figures for the previous fiscal year, all reported on by PricewaterhouseCoopers L.L.P. or other independent public accountants reasonably acceptable to Administrative Agent (without a “going concern” or like qualification or exception and without any qualification or exception as to the scope of such audit) to the effect that such consolidated financial statements present fairly in all material respects the financial condition and results of operations of the Borrower and its Consolidated Subsidiaries on a consolidated basis in accordance with GAAP consistently applied;

(b) within 45 days after the end of each fiscal quarter of the Borrower, the consolidated balance sheet and related statements of operations, stockholders’ equity and cash flows of the Borrower and its Consolidated Subsidiaries as of the end of and for such fiscal quarter and the then elapsed portion of the fiscal year, setting forth in each case in comparative form the figures for the corresponding period or periods of (or, in the case of the balance sheet, as of the end of) the previous fiscal year, all certified by one of its Financial Officers as presenting fairly in all material respects the financial condition and results of operations of the Borrower and its Consolidated Subsidiaries on a consolidated basis in accordance with GAAP consistently applied, subject to normal year-end audit adjustments and the absence of footnotes;

(c) concurrently with any delivery of financial statements under clause (a) or (b) above, a certificate in a form reasonably acceptable to Administrative Agent signed by a Financial Officer of the Borrower (i) certifying as to whether a Default has occurred and, if a Default has occurred, specifying the details thereof and any action taken or proposed to be taken with respect thereto, (ii) setting forth reasonably detailed calculations in a form reasonably acceptable to the Administrative Agent demonstrating compliance with clauses (A) and (B) of Section 7.05(a), (iii) setting forth, in a form reasonably acceptable to the Administrative Agent, the aggregate net amount of all unpaid holdback or reimbursement obligations of the Sponsored Partnerships to the Credit Parties with respect to all Allocated Partnership Volumes, taken as a whole, in the event such aggregate amount exceeds $5,000,000 as of the last day of any fiscal year of the Borrower with respect to the financial statements delivered under clause (a) above and as of the last day of any fiscal quarter of the Borrower with respect to the financial statements delivered under clause (b) above and (iv)  setting forth reasonably detailed calculations demonstrating compliance with Section 7.11;

(d) promptly after the same become publicly available, copies of all periodic and other reports, proxy statements and other materials filed by the Borrower or any Restricted Subsidiary with the Securities and Exchange Commission, or any Governmental Authority succeeding to any or all of the functions of said Commission, or with any national securities exchange, or distributed by the Borrower to its shareholders generally, as the case may be;

(e) for any Sponsored Partnership, upon the written request (or the verbal request confirmed in writing within ten days of such verbal request) of the Administrative Agent, (A)  copies of any tax returns which such Sponsored Partnership has sent to or filed with the Internal Revenue Service, and (B) the audited consolidated balance sheet and related statements of operations, partners’ equity and cash flows of such Sponsored Partnership as of the end of any fiscal year, setting forth in each case in comparative form the figures for the previous fiscal year, as reported on by PricewaterhouseCoopers L.L.P. or other independent public accountants reasonably acceptable to the Administrative Agent (without a “going concern” or like qualification or exception and without any qualification or exception as to the scope of such audit) to the effect that such consolidated financial statements present fairly in all material respects the financial condition and results of operations of such Sponsored Partnership on a consolidated basis in accordance with GAAP consistently applied;

(f) if requested by the Administrative Agent for such fiscal quarter, as soon as possible and in any event within 30 days of the end of each fiscal quarter of the Borrower, a schedule of all cash receipts and other payments received by any Credit Party with respect to any Direct Interests and by any Sponsored Partnership with respect to any Attributed Interests and as soon as possible and in any event within 45 days after the end of each fiscal quarter of the Borrower, a schedule of all oil, gas, and other mineral production attributable to the Direct Interests of each Credit Party and the Attributed Interests of each Sponsored Partnership;

(g) as soon as possible and in any event within 15 days after the execution thereof, copies of (i) any amendment to any Material Sales Contract to which the Borrower or any Restricted Subsidiary is a party, and (ii) any Material Sales Contract executed and delivered after the date hereof to which the Borrower or any Restricted Subsidiary is a party;

(h) as soon as available, and in any event no later than April 1 and October 1 of each year, the Reserve Reports required on such dates pursuant to Section 3.01;

(i) together with the Reserve Reports required under clause (h) above, a report, in reasonable detail, setting forth (i) the Swap Agreements then in effect, the notional volumes of and prices for, on a monthly basis and in the aggregate, the Crude Oil and Natural Gas for each such Swap Agreement and the term of each such Swap Agreement and (ii) the notional volumes of Crude Oil and Natural Gas for each such Swap Agreement allocated to (x) the Direct Interests and Attributed Interests and (y) the Other Attributed Interests;

(j) if requested by the Administrative Agent, as soon as possible and in any event within 30 days of such request, copies of the Organizational Documents of any one or more of the Sponsored Partnerships as specified by the Administrative Agent in such request; and

(k) promptly following any request therefor, such other information regarding the operations, business affairs and financial condition of any Credit Party, or compliance with the terms of this Agreement, as the Administrative Agent or any Lender may reasonably request.

Section 6.02. Notices of Material Events. The Borrower will furnish to the Administrative Agent and each Lender prompt written notice of the following:

(a) as soon as possible, but in any event within 5 days of obtaining knowledge thereof, the occurrence of any Default;

(b) as soon as possible, but in any event within 30 days after the filing or commencement of any action, suit or proceeding by or before any arbitrator or Governmental Authority against or affecting any Credit Party or any Affiliate thereof that, if adversely determined, could reasonably be expected to result in a Material Adverse Effect;

(c) as soon as possible, but in any event within 30 days after the occurrence of any ERISA Event that, alone or together with any other ERISA Events that have occurred, could reasonably be expected to result in liability of the Borrower and the Restricted Subsidiaries in an aggregate amount exceeding $1,000,000;

(d) as soon as possible, but in any event within 30 days after any notice or claim to the effect that any Credit Party is or may be liable to any Person as a result of the release by any Credit Party, or any other Person of any Hazardous Material into the environment, which could reasonably be expected to have a Material Adverse Effect;

(e) as soon as possible, but in any event within 30 days after any notice alleging any violation of any Environmental Law by any Credit Party, which could reasonably be expected to have a Material Adverse Effect;

(f) as soon as possible, but in any event within 30 days after the occurrence of any breach or default under, or repudiation or termination of, any Material Sales Contract, which could reasonably be expected to have a Material Adverse Effect;

(g) as soon as possible, but in any event within 30 days after the receipt by the Borrower or any Restricted Subsidiary of any management letter or comparable analysis prepared by the auditors for the Borrower or any such Restricted Subsidiary; and

(h) as soon as possible, but in any event within 30 days after any other development that results in, or could reasonably be expected to result in, a Material Adverse Effect.

Each notice delivered under this Section shall be accompanied by a statement of a Responsible Officer of the Borrower setting forth the details of the event or development requiring such notice and any action taken or proposed to be taken with respect thereto.

Section 6.03. Existence; Conduct of Business. The Borrower will, and will cause each Restricted Subsidiary and each Sponsored Partnership to, do or cause to be done all things necessary to preserve, renew and keep in full force and effect its legal existence and the rights, licenses, permits, privileges and franchises material to the conduct of its business; provided that the foregoing shall not prohibit any merger, consolidation, liquidation or dissolution permitted under Section 7.03, nor shall the Borrower, any Restricted Subsidiary or any Sponsored Partnership be required to preserve any right or franchise unrelated to the Borrowing Base Properties if the Borrower, such Restricted Subsidiary or such Sponsored Partnership determines that the preservation thereof is no longer desirable in the conduct of its business and that the loss thereof is not adverse in any material respect to the Administrative Agent or any Lender.

Section 6.04. Payment of Obligations. The Borrower will, and will cause each Restricted Subsidiary and each Sponsored Partnership to, pay its obligations, including Tax liabilities, that, if not paid, could result in a Material Adverse Effect before the same shall become delinquent or in default, except where (a) the validity or amount thereof is being contested in good faith by appropriate proceedings, (b) the Borrower, such Restricted Subsidiary or such Sponsored Partnership, as applicable, has set aside on its books adequate reserves with respect thereto in accordance with GAAP and (c) the failure to make payment pending such contest could not reasonably be expected to result in a Material Adverse Effect.

Section 6.05. Maintenance of Properties; Insurance. The Borrower will, and will cause each Restricted Subsidiary and each Sponsored Partnership and use commercially reasonable efforts to cause each operator of Borrowing Base Properties to, (a) keep and maintain all property material to the conduct of its business in good working order and condition, ordinary wear and tear excepted, and (b) maintain, with financially sound and reputable insurance companies, insurance in such amounts and against such risks as are customarily maintained by companies engaged in the same or similar businesses operating in the same or similar locations. Upon request of the Administrative Agent, the Borrower will furnish or cause to be furnished to the Administrative Agent from time to time a summary of the respective insurance coverage of the Borrower, its Restricted Subsidiaries and the Sponsored Partnerships in form and substance reasonably satisfactory to the Administrative Agent, and, if requested, will furnish the Administrative Agent copies of the applicable policies. Upon demand by Administrative Agent, the Borrower will cause any insurance policies covering any such property to be endorsed (a) to provide that such policies may not be cancelled, reduced or affected in any manner for any reason without fifteen (15) days prior notice to Administrative Agent, (b) to include the Administrative Agent as loss payee with respect to all property/casualty policies and additional insured with respect to all liability policies and (c) to provide for such other matters as the Lenders may reasonably require.

Section 6.06. Books and Records; Inspection Rights. The Borrower will, and will cause each Restricted Subsidiary and each Sponsored Partnership to, keep proper books of record and account in which full, true and correct entries are made of all dealings and transactions in relation to its business and activities. The Borrower will, and will cause each Restricted Subsidiary and each Sponsored Partnership to, permit any representatives designated by the Administrative Agent or any Lender, upon reasonable prior notice, to visit and inspect its properties, to examine and make extracts from its books and records, and to discuss its affairs, finances and condition with its officers and independent accountants, all at such reasonable times and as often as reasonably requested; provided that so long as no Default exists, such visits and inspections shall not be more frequent than once in any period of 12 consecutive calendar months without the prior consent or request of the Borrower.

Section 6.07. Compliance with Laws. The Borrower will, and will cause each Restricted Subsidiary and each Sponsored Partnership to, comply with all laws, rules, regulations and orders of any Governmental Authority applicable to it or its property, except where the failure to do so, individually or in the aggregate, could not reasonably be expected to result in a Material Adverse Effect.

Section 6.08. Use of Proceeds and Letters of Credit. The proceeds of the Loans will be used only to (a) pay the fees, expenses and transaction costs of the Transactions, (b) make purchases of outstanding Equity Interests in Sponsored Partnerships to the extent permitted under Section 7.04(b), (c) make investments in the Equity Interests of PDC Mountaineer to the extent permitted under Section 7.04(k), (d) make investments consisting of loans to the Marcellus JV Investor Partner to the extent permitted under Section 7.04(l) and (e) finance the working capital needs of the Borrower, including capital expenditures, and for general corporate purposes of the Borrower and the Guarantors, in the ordinary course of business, including the exploration, acquisition and development of Oil and Gas Interests. No part of the proceeds of any Loan will be used, whether directly or indirectly, to purchase or carry any margin stock (as defined in Regulation U issued by the Board). Letters of Credit will be issued only to support general corporate purposes of the Borrower and the Restricted Subsidiaries.

Section 6.09. Mortgages and Other Security. The Borrower will, and will cause each Restricted Subsidiary to, execute and deliver to the Administrative Agent, for the benefit of the Secured Parties, (a) Mortgages in form and substance acceptable to the Administrative Agent together with such other assignments, conveyances, amendments, agreements and other writings, including, without limitation, UCC-1 financing statements (each duly authorized and executed, as applicable) as the Administrative Agent shall deem necessary or appropriate to grant, evidence and perfect and maintain Liens in Direct Interests having an Engineered Value equal to or greater than eighty percent (80%) of the Engineered Value of the Direct Interests included in the Borrowing Base Properties (b) promptly after entering into any such agreement, collateral assignments of all right, title and interest of any Credit Party in and to any gathering, handling, storing, processing, transportation, supply, pipeline or marketing agreement with any Affiliate that is not a Credit Party (other than PDC Mountaineer or any of its Subsidiaries), and (c) Security Instruments in form and substance acceptable to the Administrative Agent together with such other assignments, conveyances, amendments, agreements and other writings, including, without limitation, UCC-1 financing statements (each duly authorized and executed, as applicable) and control agreements as the Administrative Agent shall deem necessary or appropriate to grant, evidence and perfect Liens in all or substantially all of the assets of each Credit Party, including all of the Equity Interests of each Restricted Subsidiary and Sponsored Partnership now or hereafter owned by Borrower or any Restricted Subsidiary, in each case, subject only to Permitted Encumbrances and other Liens permitted under Section 7.02. Within 30 days after the Effective Date (or such longer time as acceptable to the Administrative Agent in its sole discretion), the Borrower agrees to execute and deliver, or cause to be executed and delivered, such amendments to, or amendment and restatements of, the Mortgages, in form and substance reasonably satisfactory to the Administrative Agent, as the Administrative Agent may reasonably require in connection with the Transactions.

Section 6.10. Title Data. As soon as available any in any event no later than thirty (30) days after the Effective Date (or such longer time as acceptable to the Administrative Agent in its sole discretion), the Borrower will, and will cause each Guarantor to, deliver to the Administrative Agent such opinions of counsel (including, if so requested, title opinions, addressed to the Administrative Agent) and other evidence of title as the Administrative Agent shall deem necessary or appropriate to verify (i) the title of the Credit Parties to not less than  eighty percent (80%) of the Engineered Value of the Borrowing Base Properties that are required to be subject to a Mortgage pursuant to Section 6.09, and (ii) the validity, perfection and priority of the Liens created by such Mortgages and such other matters regarding such Mortgages as Administrative Agent shall reasonably request.

Section 6.11. Swap Agreements. Upon the request of the Majority Lenders, the Borrower and each Restricted Subsidiary shall take all actions necessary to cause all of its right, title and interest in each Swap Agreement to which it is a party to be collaterally assigned to the Administrative Agent, for the benefit of the Secured Parties, and shall, if requested by the Administrative Agent or the Majority Lenders, use its commercially reasonable efforts to cause each such agreement or contract to (a) expressly permit such assignment and (b) upon the occurrence of any default or event of default under such agreement or contract, (i) to permit the Lenders to cure such default or event of default and assume the obligations of such Credit Party under such agreement or contract and (ii) to prohibit the termination of such agreement or contract by the counterparty thereto if the Lenders assume the obligations of such Credit Party under such agreement or contract and the Lenders take the actions required under the foregoing clause (i). Upon the request of the Administrative Agent, the Borrower shall, within thirty (30) days of such request, provide to the Administrative Agent and each Lender copies of all agreements, documents and instruments evidencing the Swap Agreements not previously delivered to the Administrative Agent and Lenders, certified as true and correct by a Responsible Officer of the Borrower, and such other information regarding such Swap Agreements as the Administrative Agent and Lenders may reasonably request.

Section 6.12. Operation of Oil and Gas Interests.

(a) The Borrower will, and will cause each Restricted Subsidiary (and each Sponsored Partnership with respect to Attributed Interests) to, maintain, develop and operate its Oil and Gas Interests in a good and workmanlike manner, and observe and comply with all of the terms and provisions, express or implied, of all oil and gas leases relating to such Oil and Gas Interests so long as such Oil and Gas Interests are capable of producing Hydrocarbons and accompanying elements in paying quantities, except where such failure to comply could not reasonably be expected to have a Material Adverse Effect.

(b) Borrower will, and will cause each Restricted Subsidiary (and each Sponsored Partnership with respect to Attributed Interests) to, comply in all respects with all contracts and agreements applicable to or relating to its Oil and Gas Interests or the production and sale of Hydrocarbons and accompanying elements therefrom, except to the extent a failure to so comply could not reasonably be expected to have a Material Adverse Effect.

Section 6.13. Restricted Subsidiaries. In the event any Person is or becomes a Restricted Subsidiary, Borrower will (a) promptly take all action necessary to comply with Section 6.14, (b) promptly take all such action and execute and deliver, or cause to be executed and delivered, to the Administrative Agent all such opinions, documents, instruments, agreements, and certificates similar to those described in Sections 5.01(b) and 5.01(c) that the Administrative Agent may request, and (c) promptly cause such Restricted Subsidiary to (i) become a party to this Agreement and Guarantee the Obligations by executing and delivering to the Administrative Agent a Counterpart Agreement in the form of Exhibit C, (ii) to the extent required to comply with Section 6.09 or as requested by the Administrative Agent, execute and deliver Mortgages and other Security Instruments creating Liens prior and superior in right to any other Person, subject to Permitted Encumbrances, in such Restricted Subsidiary’s Direct Interests and Partnership Interests, and (iii) to the extent required to comply with Section 6.10, all title opinions and other information relating to such Restricted Subsidiary’s Direct Interests. Upon delivery of any such Counterpart Agreement to the Administrative Agent, notice of which is hereby waived by each Credit Party, such Restricted Subsidiary shall be a Guarantor and shall be as fully a party hereto as if such Restricted Subsidiary were an original signatory hereto. Each Credit Party expressly agrees that its obligations arising hereunder shall not be affected or diminished by the addition or release of any other Credit Party hereunder. This Agreement shall be fully effective as to any Credit Party that is or becomes a party hereto regardless of whether any other Person becomes or fails to become or ceases to be a Credit Party hereunder. With respect to each such Restricted Subsidiary, the Borrower shall promptly send to the Administrative Agent written notice setting forth with respect to such Person the date on which such Person became a Restricted Subsidiary of the Borrower, and supplement the data required to be set forth in the Schedules to this Agreement as a result of the acquisition or creation of such Restricted Subsidiary; provided that such supplemental data must be reasonably acceptable to the Administrative Agent and Majority Lenders.

Section 6.14. Pledged Equity Interests. On the date hereof and at the time hereafter that any Restricted Subsidiary of the Borrower or any Sponsored Partnership is created or acquired or any Unrestricted Subsidiary becomes a Restricted Subsidiary, the Borrower and the Subsidiaries (as applicable) shall execute and deliver to the Administrative Agent for the benefit of the Secured Parties, a Security Agreement (or an amendment or amendment and restatement of the existing Security Agreement), in form and substance acceptable to the Administrative Agent, from the Borrower and/or the Restricted Subsidiaries (as applicable) covering all Equity Interests owned by the Borrower or such Restricted Subsidiaries in such Restricted Subsidiaries or any Sponsored Partnership, together with all certificates (or other evidence acceptable to Administrative Agent) evidencing the issued and outstanding Equity Interests of each such Restricted Subsidiary or Sponsored Partnership of every class owned by such Credit Party (as applicable) which, if certificated, shall be duly endorsed or accompanied by stock powers executed in blank (as applicable), as Administrative Agent shall deem necessary or appropriate to grant, evidence and perfect a first priority security interest in the issued and outstanding Equity Interests owned by Borrower or any Restricted Subsidiary in each Restricted Subsidiary and each Sponsored Partnership.

Article VII

Negative Covenants

Until the Aggregate Commitment has expired or terminated and the principal of and interest on each Loan and all fees payable hereunder have been paid in full and all Letters of Credit have expired or terminated and all LC Disbursements shall have been reimbursed, each Credit Party covenants and agrees with the Lenders that:

Section 7.01. Indebtedness. The Borrower will not, nor will it permit any of its Restricted Subsidiaries or any Sponsored Partnership to, create, incur, assume or permit to exist any Indebtedness, except:

(a) the Obligations;

(b) Indebtedness existing on the date hereof and set forth in Schedule 7.01 and extensions, renewals and replacements of any such Indebtedness that do not increase the outstanding principal amount thereof;

(c) Indebtedness of the Borrower to any Guarantor and of any Guarantor to the Borrower or any other Guarantor; provided, that (i) all such Indebtedness shall be unsecured and subordinated in right of payment to the payment in full of all of the Obligations in a manner and on terms and conditions reasonably satisfactory to the Administrative Agent and (ii) all such Indebtedness is evidenced by promissory notes in form and substance reasonably satisfactory to the Administrative Agent, and such promissory notes are subject to a first priority security interest in favor of the Administrative Agent for the benefit of the Secured Parties on terms and conditions reasonably satisfactory to the Administrative Agent;

(d) Guarantees of the Obligations;

(e) Indebtedness of the Borrower and the Restricted Subsidiaries incurred to finance the acquisition, construction or improvement of any fixed or capital assets (including office equipment, data processing equipment and motor vehicles), including Capital Lease Obligations and any Indebtedness assumed in connection with the acquisition of any such assets or secured by a Lien on any such assets prior to the acquisition thereof, and extensions, renewals and replacements of any such Indebtedness that do not increase the outstanding principal amount thereof; provided that (i) such Indebtedness is incurred prior to or within 90 days after such acquisition or the completion of such construction or improvement and (ii) the aggregate principal amount of Indebtedness permitted by this clause (e) together with the aggregate principal amount of Indebtedness permitted by clause (i) of this Section 7.01 shall not exceed $15,000,000 at any time outstanding;

(f) Indebtedness incurred or deposits made by the Borrower, any Restricted Subsidiary or any Sponsored Partnership (i) under worker’s compensation laws, unemployment insurance laws or similar legislation, or (ii) in connection with bids, tenders, contracts (other than for the payment of Indebtedness) or leases to which such Credit Party or such Sponsored Partnership is a party, (iii) to secure public or statutory obligations of such Credit Party or such Sponsored Partnership, and (iv) of cash or U.S. Government Securities made to secure the performance of statutory obligations, surety, stay, customs and appeal bonds to which such Credit Party or such Sponsored Partnerships a party in connection with the operation of the Oil and Gas Interests, in each case in the ordinary course of business;

(g) Indebtedness of the Borrower, any Restricted Subsidiary or any Sponsored Partnership under (i) Swap Agreements to the extent permitted under Section 7.05, (ii) Advance Payment Contracts permitted under Section 7.12 and (iii) Sale and Leaseback Transactions to the extent permitted under Section 7.12;

(h) subject to any adjustment of the Borrowing Base required under Section 3.05 and any mandatory prepayment required under Section 2.11(c), unsecured Indebtedness under the Senior Notes (and any Permitted Refinancing thereof), including any Indebtedness constituting Guarantees thereof by any Credit Party, in an aggregate principal amount not to exceed the sum of $500,000,000 minus the aggregate principal amount of all repayments and prepayments of the Senior Notes to the extent permitted under the terms of this Agreement; provided that at the time of and immediately after giving effect to each issuance of Senior Notes (and any Permitted Refinancing thereof), no Default shall have occurred and be continuing;

(i) Other unsecured Indebtedness of the Credit Parties; provided that the aggregate principal amount of Indebtedness permitted by this clause (i) together with the aggregate principal amount of Indebtedness permitted by clause (e) of this Section 7.01 shall not exceed $15,000,000 at any time outstanding;

(j) Other unsecured Indebtedness of the Sponsored Partnership: provided the aggregate principal amount of such Indebtedness shall not exceed $1,000,000 at any time outstanding; and

(k) Indebtedness of Marcellus JV PDC Partner to Marcellus JV Investor Partner for the unfunded portion of any capital contribution Marcellus JV PDC Partner is required to make to PDC Mountaineer in accordance with the Marcellus JV Documents; provided that (i) the aggregate principal amount of such Indebtedness shall not exceed $40,000,000 at any time outstanding, (ii) on each date such Indebtedness is incurred, the Borrower is in compliance with the financial covenants set forth in Section 7.11 as of the last day of the fiscal quarter most recently ended for which financial statements are available, calculated on a pro forma basis after giving effect to the incurrence of such Indebtedness as if such Indebtedness had been incurred on the first day of such fiscal quarter, and (iii) Aggregate Commitment Usage is less than eighty percent (80%) on each date such Indebtedness is incurred.

Section 7.02. Liens. The Borrower will not, nor will it permit any of its Restricted Subsidiaries or any Sponsored Partnership to, create, incur, assume or permit to exist any Lien on any property or asset now owned or hereafter acquired by it, or assign or sell any income or revenues (including accounts receivable) or rights in respect of any thereof, except:

(a) any Lien created pursuant to this Agreement or the Security Instruments;

(b) Permitted Encumbrances;

(c) any Lien on any property or asset of the Borrower or any Restricted Subsidiary existing on the date hereof and set forth in Schedule 7.02; provided that (i) such Lien shall not apply to any other property or asset of the Borrower or any other Restricted Subsidiary and (ii) such Lien shall secure only those obligations which it secures on the date hereof and extensions, renewals and replacements thereof that do not increase the outstanding principal amount thereof;

(d) any Lien existing on any property or asset prior to the acquisition thereof by the Borrower or any Restricted Subsidiary or existing on any property or asset of any Person that becomes a Restricted Subsidiary after the date hereof prior to the time such Person becomes a Restricted Subsidiary; provided that (i) such Lien secures Indebtedness permitted by clause (e) of Section 7.01, (ii) such Lien is not created in contemplation of or in connection with such acquisition or such Person becoming a Restricted Subsidiary, as the case may be, (ii) such Lien shall not apply to any other property or assets of the Borrower or any other Restricted Subsidiary and (iii) such Lien shall secure only those obligations which it secures on the date of such acquisition or the date such Person becomes a Restricted Subsidiary, as the case may be and extensions, renewals and replacements thereof that do not increase the outstanding principal amount thereof;

(e) Liens on fixed or capital assets (including office equipment, data processing equipment and motor vehicles) acquired, constructed or improved by the Borrower or any Restricted Subsidiary; provided that (i) such Liens, secure Indebtedness permitted by clause (e) of Section 7.01, (ii) such security interests and the Indebtedness secured thereby are incurred prior to or within 90 days after such acquisition or the completion of such construction or improvement, (iii) the Indebtedness secured thereby does not exceed the cost of acquiring, constructing or improving such fixed or capital assets and (iv) such security interests shall not apply to any other property or assets of the Borrower or any other Restricted Subsidiaries;

(f) Liens in favor of Marcellus JV Investor Partner on the Equity Interests of PDC Mountaineer owned by Marcellus JV PDC Partner; provided that (i) the only Indebtedness secured by such Liens is the Indebtedness permitted by clause (k) of Section 7.01, (ii) the only property or assets of the Borrower or any Restricted Subsidiary encumbered by such Liens are such Equity Interests and the proceeds thereof and (iii) except for the Liens permitted by this Section 7.02(f), no other Liens encumber such Equity Interests or the proceeds thereof.

Section 7.03. Fundamental Changes.

(a) The Borrower will not, nor will it permit any of its Restricted Subsidiaries to, merge into or consolidate with any other Person, or permit any other Person to merge into or consolidate with it, or Dispose of (in one transaction or in a series of transactions) all or any substantial part of its assets, or any of its Borrowing Base Properties (or permit any Sponsored Partnership to Dispose of any Attributed Interests included in the Borrowing Base Properties) or the Equity Interests of any Credit Party in any Restricted Subsidiary or any Sponsored Partnership that holds title to any Attributed Interest (in each case, whether now owned or hereafter acquired), or effect, or enter into an agreement to effect, any Hedge Modification, or liquidate or dissolve, except that, the Borrower, any Restricted Subsidiary or any Sponsored Partnership may sell Hydrocarbons produced from its Oil and Gas Interests in the ordinary course of business and, if at the time thereof and immediately after giving effect thereto no Default shall have occurred and be continuing:

(i) any Restricted Subsidiary may merge into the Borrower in a transaction in which the Borrower is the surviving entity;

(ii) any Restricted Subsidiary may merge into any other Restricted Subsidiary in a transaction in which the surviving entity is a Restricted Subsidiary;

(iii) any Restricted Subsidiary or any Sponsored Partnership may Dispose of its assets to the Borrower or to another Restricted Subsidiary;

(iv) any Restricted Subsidiary or Sponsored Partnership may liquidate or dissolve if the Borrower determines in good faith that such liquidation or dissolution is in the best interests of the Borrower (or in the case of any Sponsored Partnership the best interest of the holders of the Equity Interests of such Sponsored Partnership) and is not materially disadvantageous to the Lenders;

(v) the Borrower, any Restricted Subsidiary or any Sponsored Partnership may Dispose of equipment and related items in the ordinary course of business, that are obsolete or no longer necessary in the business of the Borrower or any of its Subsidiaries or that is being replaced by equipment of comparable value and utility;

(vi) subject to Section 2.11(b) and Section 2.11(c), the Borrower, any Restricted Subsidiary or any Sponsored Partnership may Dispose of Borrowing Base Properties (whether pursuant to a Disposition of all, but not less than all, of the Equity Interests of any Restricted Subsidiary or otherwise) or enter into Hedge Modifications; provided that the Engineered Value (as assigned by the Administrative Agent) of all Borrowing Base Properties Disposed of and the economic effect (as determined by the Administrative Agent) of all Hedge Modifications entered into between Scheduled Redeterminations does not exceed, in the aggregate for all Credit Parties and the Sponsored Partnerships taken as a whole, ten percent (10%) of the Borrowing Base most recently determined; provided, further, that Borrower shall promptly and in any event within three (3) Business Days thereafter, provide written notice to the Administrative Agent of any such Hedge Modification, setting forth in reasonable detail the terms of such Hedge Modification; and

(vii) so long as (x) no Borrowing Base Deficiency exists or would exist after giving effect to any such Disposition or Hedge Modification, as the case may be, and (y) no Default exists or would exist after giving effect to such Disposition or Hedge Modification, as the case may be, the Borrower, the Restricted Subsidiaries and the Sponsored Partnerships may Dispose of Borrowing Base Properties (whether pursuant to a Disposition of all, but not less than all, of the Equity Interests of any Restricted Subsidiary or otherwise) and enter into Hedge Modifications not otherwise permitted by the foregoing clause (vi); provided that:

(1) the Borrower provides the Administrative Agent and the Lenders with at least fifteen (15) days prior written notice of such Disposition or Hedge Modification, setting forth in reasonable detail the Borrowing Base Properties that are subject to such Disposition or the terms of such Hedge Modification, as the case may be;

(2) the Administrative Agent and the Lenders may request a Special Redetermination of the Borrowing Base in accordance with the procedures and standards set forth in Section 3.03;

(3)(a) with respect to any Disposition of Borrowing Base Properties, the consideration received shall be equal to or greater than the fair market value of the Oil and Gas Interests subject to such Disposition and (b) with respect to any Hedge Modification, the consideration received for such Hedge Modification is greater than or equal to fair market value, in each case, as reasonably determined in good faith by the board of directors of the Borrower and, if requested by the Administrative Agent, the Borrower shall deliver to the Administrative Agent a certificate of a Responsible Officer certifying to that effect;

(4) at least 90% of the consideration received by the Borrower, any Restricted Subsidiary or any Sponsored Partnership in respect of any such Disposition or Hedge Modification is cash or cash equivalents;

(5) the Borrower prepays the Loans to the extent required by Sections 2.11(b) and 2.11(c) as a result of such Disposition or Hedge Modification (as determined after giving effect to any Special Redetermination pursuant to clause (2) above), and with respect to any Disposition, uses any remaining Net Cash Proceeds received from such Disposition in accordance with the terms and conditions set forth in Section 2.11(b); and

(6) unless otherwise approved in writing by all of the Lenders, such Disposition by the Credit Parties (whether pursuant to one transaction or a series of related transactions) is not a Disposition of all or substantially all of the Borrowing Base Properties (whether pursuant to a Disposition of all, but not less than all, of the Equity Interests of any Restricted Subsidiary or otherwise).

(b) The Borrower will not, nor will it permit any of its Restricted Subsidiaries or any Sponsored Partnership to, engage to any material extent in any business other than businesses of the type conducted by the Borrower and its Restricted Subsidiaries on the date of execution of this Agreement and businesses reasonably related thereto.

Section 7.04. Investments, Loans, Advances, Guarantees and Acquisitions. The Borrower will not, nor will it permit any of its Restricted Subsidiaries to, purchase, hold or acquire (including pursuant to any merger with any Person that was not a wholly owned Restricted Subsidiary prior to such merger) any capital stock, evidences of Indebtedness or other securities (including any option, warrant or other right to acquire any of the foregoing) of, make or permit to exist any loans or advances to, Guarantee any Indebtedness of, or make or permit to exist any investment or any other interest in, any other Person, or purchase or otherwise acquire (in one transaction or a series of transactions) any assets of any other Person constituting a business unit, except:

(a) Permitted Investments;

(b) investments by the Borrower in the Equity Interests of any Restricted Subsidiary or Sponsored Partnership; provided that with respect to investments made by the Borrower to purchase outstanding Equity Interests of any Sponsored Partnership, (i) immediately after giving effect to such investment, the aggregate amount of investments made by the Borrower to purchase outstanding Equity Interests of any Sponsored Partnership since July 15, 2008 shall not exceed $250,000,000, (ii) both before and immediately after giving effect to such investment, no Default shall have occurred and be continuing, and (iii) both before and immediately after giving effect to such investment, Aggregate Commitment Usage is less than eighty percent (80%);

(c) investments by the Borrower or any Guarantor consisting of intercompany Indebtedness permitted under Section 7.01(c)

(d) Guarantees constituting Indebtedness permitted by Section 7.01;

(e) investments by the Borrower and its Restricted Subsidiaries that are (i) customary in the oil and gas business, (ii) made in the ordinary course of the Borrower’s or such Restricted Subsidiary’s business, and (iii) made in the form of, or pursuant to, oil, gas and mineral leases, operating agreements, farm-in agreements, farm-out agreements, development agreements, unitization agreements, joint bidding agreements, services contracts and other similar agreements that a reasonable and prudent oil and gas industry owner or operator would find acceptable;

(f) investments consisting of Swap Agreements to the extent permitted under Section 7.05;

(g) investments existing as the date hereof and set forth on Schedule 7.04;

(h) Investments consisting of (i) loans and advances to employees for moving, entertainment, travel and other similar expenses in the ordinary course of business and (ii) other short term loans to employees not to exceed, with respect to the foregoing clauses (i) and (ii) together, $250,000 in the aggregate at any time outstanding;

(i) Investments representing the non-cash portion of the consideration received for any Disposition of any assets permitted under Section 7.03, not to exceed $1,000,000 in the aggregate at any time outstanding;

(j) other investments by the Borrower and the Restricted Subsidiaries; provided that, (1) on the date any such investment is made, the amount of such investment, together with all other investments made pursuant to this clause (j) of Section 7.04 (in each case determined based on the cost of such investment), since the Effective Date does not exceed in the aggregate, $10,000,000, and (2) both before and after giving effect to such investment, Aggregate Commitment Usage is less than ninety percent (90%);

(k) (i) the investment made by the Borrower in the Equity Interests of PDC Mountaineer in exchange for the Borrower’s contribution of the Marcellus Properties pursuant to the Marcellus JV Contribution Agreement and (ii) so long as no Default shall have occurred and be continuing or would be caused thereby, (A) additional cash equity investments by the Borrower in the Equity Interests of PDC Mountaineer at any time during the Marcellus JV Catch-Up Period not to exceed $40,000,000, and (B) additional cash equity investments by the Borrower in the Equity Interests of PDC Mountaineer at any time after the end of the Marcellus JV Catch-Up Period; provided that, with respect to each such cash equity investment made pursuant to this clause (B), (1) the Borrower is in compliance with the financial covenants set forth in Section 7.11 as of the last day of the fiscal quarter most recently ended for which financial statements are available, calculated on a pro forma basis after giving effect to such investment as if such investment had been made on the first day of such fiscal quarter and (2) both immediately before and immediately after giving effect to such investment, Aggregate Commitment Usage is less than eighty percent (80%); and

(l) investments consisting of loans to Marcellus JV Investor Partner for the unfunded portion of any capital contribution Marcellus JV Investor Partner is required to make to PDC Mountaineer in accordance with the Marcellus JV Documents; provided that (i) no Default shall have occurred and be continuing or would be caused thereby, (ii) the aggregate principal amount of such loans shall not exceed $40,000,000 at any time outstanding, (iii) on the date each such loan is made, the Borrower shall be in compliance with the financial covenants set forth in Section 7.11 as of the last day of the fiscal quarter most recently ended for which financial statements are available, calculated on a pro forma basis after giving effect to such loan as if such loan had been made on the first day of such fiscal quarter, and (iv) both immediately before and immediately after giving effect to each such loan, Aggregate Commitment Usage is less than eighty percent (80%).

Section 7.05. Swap Agreements. The Borrower will not, nor will the Borrower permit any of its Restricted Subsidiaries or any Sponsored Partnership to, enter into any Swap Agreement, except the Existing Swap Agreements and Swap Agreements entered into in the ordinary course of business and not for speculative purposes to:

(a) hedge or mitigate Crude Oil and Natural Gas price risks to which the Borrower, any Restricted Subsidiary or any Sponsored Partnership has actual exposure (whether or not treated as a hedge for accounting purposes under GAAP); provided that at the time the Borrower (whether on its own behalf or on behalf of any Sponsored Partnership), any Restricted Subsidiary or any Sponsored Partnership enters into any such Swap Agreement, such Swap Agreement (x) does not have a term greater than sixty (60) months from the date such Swap Agreement is entered into, and (y) when aggregated with all other Swap Agreements then in effect would not cause the aggregate notional volume per month for each of Crude Oil and Natural Gas, calculated separately, under all Swap Agreements then in effect (other than Excluded Hedges) to exceed, as of the date such Swap Agreement is executed, (A) for any month during the first two years of the forthcoming five year period, (i) eighty percent (80%) of the “forecasted production from total proved reserves” (as defined below) of the Borrower, the Restricted Subsidiaries, and the Sponsored Partnerships, taken as a whole or (ii) eighty percent (80%) of the “forecasted production from total proved reserves” of the Borrower and the Restricted Subsidiaries (including the Attributed Interests), and (B) for any month during the last three years of the forthcoming five year period, (i) eighty percent (80%) of the “forecasted production from proved producing reserves” (as defined below) of the Borrower, the Restricted Subsidiaries, and the Sponsored Partnerships, taken as a whole or (ii) eighty percent (80%) of the “forecasted production from proved producing reserves” of the Borrower and the Restricted Subsidiaries (including the Attributed Interests); and

(b) effectively cap, collar or exchange interest rates (from fixed to floating rates, from one floating rate to another floating rate or otherwise) with respect to any interest-bearing liability or investment of any Credit Party.

As used in this Section 7.05, “forecasted production from proved producing reserves” and “forecasted production from total proved reserves” means the forecasted production from proved producing reserves or total proved reserves, as the case may be, of each of Crude Oil and Natural Gas as reflected in the most recent Reserve Report delivered to the Administrative Agent pursuant to Section 6.01, after giving effect to any pro forma adjustments for the consummation of any Acquisitions or Dispositions since the effective date of such Reserve Report.

Except as otherwise permitted in Section 7.03, in the event any Credit Party or Sponsored Partnership enters into a Swap Agreement (including the Existing Swap Agreements), the terms and conditions of such Swap Agreement may not be amended or modified, nor may any Credit Party sell, assign, monetize, transfer, cancel or otherwise dispose of any of its rights and interests in any such Swap Agreement without the prior written consent of the Required Lenders (it being understood that any Lender Counterparty may sell, assign, transfer, novate, or otherwise dispose of its rights and interests in any Swap Agreement to any Approved Counterparty at any time).

Each Credit Party and each Lender agrees and acknowledges that (i) the Existing Swap Agreements are Swap Agreements permitted under this Section 7.05, (ii) as of the Effective Date, the counterparty to each Existing Swap Agreement is a Lender Counterparty (or was a Lender Counterparty under and as defined in the Original Credit Agreement), (iii) the obligations of the Credit Parties under the Existing Swap Agreements are included in the defined term “Lender Hedging Obligations” and such obligations are entitled to the benefits of, and are secured by the Liens granted under, the Security Instruments, and (iv) as of the Effective Date, the aggregate notional volume of Hydrocarbons under all Swap Agreements of the Credit Parties then in effect does not exceed the percentages of forecasted production from total proved reserves and forecasted production from proved producing reserves, as the case may be, permitted pursuant to this Section 7.05 (calculated as if a Credit Party was entering into a new transaction under a Swap Agreement on the Effective Date).

Section 7.06. Restricted Payments. The Borrower will not, nor will it permit any of its Restricted Subsidiaries to, declare or make, or agree to pay or make, directly or indirectly, any Restricted Payment, except that (a) the Borrower may declare and pay dividends with respect to its Equity Interests payable solely in additional shares of its common stock, (b) the Borrower may make Restricted Payments pursuant to and in accordance with stock option plans or other benefit plans for management or employees of the Borrower and its Restricted Subsidiaries in an aggregate amount not to exceed $5,000,000 in any fiscal year, and (c) any Restricted Subsidiary may make Restricted Payments to the Borrower or any Guarantor.

Section 7.07. Transactions with Affiliates. The Borrower will not, nor will it permit any of its Restricted Subsidiaries to, sell, lease or otherwise transfer any property or assets to, or purchase, lease or otherwise acquire any property or assets from, or otherwise engage in any other transactions with, any of its Affiliates (including any Sponsored Partnership), except (a) in the ordinary course of business at prices and on terms and conditions not less favorable to the Borrower or such Restricted Subsidiary than could be obtained on an arm’s-length basis from unrelated third parties, (b) transactions between or among the Borrower and its Restricted Subsidiaries not involving any other Affiliate (including any Sponsored Partnership), (c) transactions described on Schedule 7.07, (d) any Restricted Payment permitted by Section 7.06, (e) investments permitted by Section 7.04 and (f) transactions with PDC Mountaineer entered into in connection with the Marcellus Joint Venture.

Section 7.08. Restrictive Agreements. The Borrower will not, nor will it permit any of its Restricted Subsidiaries to, directly or indirectly, enter into, incur or permit to exist any agreement or other arrangement that prohibits, restricts or imposes any condition upon (a) the ability of the Borrower or any Restricted Subsidiary to create, incur or permit to exist any Lien upon any of its property or assets, or (b) the ability of any Restricted Subsidiary to pay dividends or other distributions with respect to any of its Equity Interests or to make or repay loans or advances to the Borrower or any Restricted Subsidiary or to Guarantee Indebtedness of the Borrower or any Restricted Subsidiary; provided that (i) the foregoing shall not apply to restrictions and conditions imposed by law or by this Agreement or the Indenture (or any documents evidencing or relating to the issuance of any permitted Senior Notes or any Permitted Refinancing), (ii) the foregoing shall not apply to restrictions and conditions existing on the date hereof identified on Schedule 7.08 (but shall apply to any extension or renewal of, or any amendment or modification expanding the scope of, any such restriction

or condition), (iii) clause (a) of the foregoing shall not apply to restrictions or conditions imposed by any agreement relating to secured Indebtedness permitted by this Agreement if such restrictions or conditions apply only to the property or assets securing such Indebtedness, (iv) clause (a) of the foregoing shall not apply to customary provisions in leases and other contracts restricting the assignment thereof and (v) the foregoing shall not apply to the Organizational Documents of the Borrower or any Restricted Subsidiary as in effect on the Effective Date or any amendment or modification thereof after the Effective Date that complies with Section 7.10. Neither the Borrower nor any of its Restricted Subsidiaries will permit any Sponsored Partnership to, directly or indirectly, enter into, incur or permit to exist any agreement or other arrangement that prohibits, restricts or imposes any condition upon the ability of any Sponsored Partnership to (x) create, incur or permit to exist any Lien upon any of its Oil and Gas Interests, (y) pay dividends or other distributions with respect to any of its Equity Interests or (z) to make or repay loans or advances to the Borrower or any Restricted Subsidiary; provided that the foregoing shall not apply to the Organizational Documents of any existing Sponsored Partnership as in effect on the Effective Date or any Sponsored Partnership formed after the date hereof if the Organizational Documents of such Sponsored Partnership are substantially the same as the Organizational Documents of the Sponsored Partnerships existing on the Effective Date or any amendment or modification thereof after the Effective Date that complies with Section 7.10.

Section 7.09. Disqualified Stock. The Borrower will not, nor will it permit any of its Restricted Subsidiaries or any Sponsored Partnership to, issue any Disqualified Stock.

Section 7.10. Amendments to Organizational Documents. The Borrower will not, nor will it permit any of its Restricted Subsidiaries nor any Sponsored Partnership to, enter into or permit any modification or amendment of, or waive any material right or obligation of any Person under its Organizational Documents if the effect thereof would be materially adverse to the Administrative Agent or any Lender or violate Section 7.08.

Section 7.11. Financial Covenants.

(a) Consolidated Current Ratio. The Borrower will not permit the Consolidated Current Ratio as of the end of any fiscal quarter ending on or after September 30, 2010, to be less than 1.00 to 1.00.

(b) Leverage Ratio.

(i) The Borrower will not permit the Consolidated Leverage Ratio, determined as of the end of each fiscal quarter ending on or after September 30, 2010 and on or before December 31, 2011 to be greater than 4.25 to 1.00.

(ii) The Borrower will not permit the Consolidated Leverage Ratio, determined as of the end of each fiscal quarter ending on or after March 31, 2012 to be greater than 4.00 to 1.00.

As used herein, with respect to any fiscal quarter, “Consolidated Leverage Ratio” means the ratio of (A) Consolidated Funded Indebtedness as of the end of such fiscal quarter to (B) Consolidated EBITDAX for the trailing four fiscal quarter period ending on the last day of such fiscal quarter.

Section 7.12. Sale and Leaseback Transactions and other Off-Balance Sheet Liabilities. The Borrower will not, nor will it permit any Restricted Subsidiary to, enter into or suffer to exist any (i) Sale and Leaseback Transaction, except Sale and Leaseback Transactions in which the aggregate amount of liability incurred by any Credit Party does not exceed $5,000,000 for all such Sale and Leaseback Transactions, taken as a whole, or (ii) any other transaction pursuant to which it incurs or has incurred Off-Balance Sheet Liabilities, except for (x) Swap Agreements permitted under the terms of Section 7.05 and (y) Advance Payment Contracts; provided that the aggregate amount of all Advance Payments received by any Credit Party that have not been satisfied by delivery of production at any time does not exceed, in the aggregate $5,000,000.

Section 7.13. Senior Notes Restrictions. The Borrower will not, nor will it permit any Restricted Subsidiary to, except for regularly scheduled payments of interest required under the Senior Notes, directly or indirectly, retire, redeem, defease, repurchase or prepay prior to the scheduled due date thereof any part of the principal of, or interest on, the Senior Notes (or any Permitted Refinancing thereof); provided that so long as no Default has occurred and is continuing, the Borrower may retire, redeem, defease, repurchase or prepay the Senior Notes with the proceeds of any Permitted Refinancing permitted pursuant to Section 7.01(h). The Borrower will not, nor will it permit any of its Restricted Subsidiaries to, enter into or permit any modification or amendment of the Senior Notes Documents the effect of which is to (a) increase the maximum principal amount of the Senior Notes or the rate of interest on any of the Senior Notes (other than as a result of the imposition of a default rate of interest in accordance with the terms of the Senior Notes Documents), (b) change or add any event of default or any covenant with respect to the Senior Notes Documents if the effect of such change or addition is to cause any one or more of the Senior Notes Documents to be more restrictive on the Borrower or any of its Subsidiaries than such Senior Notes Documents were prior to such change or addition, (c) change the dates upon which payments of principal or interest on the Senior Notes are due, (d) change any redemption or prepayment provisions of the Senior Notes, (e) alter the subordination provisions, if any, with respect to any of the Senior Notes Documents, (f) grant any Liens in any assets of the Borrower or any of its Subsidiaries, or (g) permit any Subsidiary to Guarantee the Senior Notes unless such Subsidiary is (or concurrently with any such Guarantee becomes) a Guarantor hereunder.

Section 7.14. Marcellus JV Documents. Without the Administrative Agent’s prior written consent, the Borrower will not, nor will it permit any Restricted Subsidiary to, enter into or permit any supplement, modification or amendment of, or waive any right or obligation of any Person under, any Marcellus JV Document if the effect thereof would be materially adverse to the Administrative Agent and/or any Lender or would change the definition of “AMI”, “Special PDC Withdrawal” or “Catch-Up Period”.

Article VIII

Guarantee of Obligations

Section 8.01. Guarantee of Payment. Each Guarantor unconditionally and irrevocably guarantees to the Administrative Agent for the benefit of the Secured Parties, the punctual payment of all Obligations now or which may in the future be owing by any Credit Party (the “Guaranteed Liabilities”). This Guarantee is a guaranty of payment and not of collection only. The Administrative Agent shall not be required to exhaust any right or remedy or take any action against the Borrower or any other Person or any collateral. The Guaranteed Liabilities include interest accruing after the commencement of a proceeding under bankruptcy, insolvency or similar laws of any jurisdiction at the rate or rates provided in the Loan Documents, or the Swap Agreements between any Credit Party and any Lender Counterparty, as the case may be. Each Guarantor agrees that, as between the Guarantor and the Administrative Agent, the Guaranteed Liabilities may be declared to be due and payable for the purposes of this Guarantee notwithstanding any stay, injunction or other prohibition which may prevent, delay or vitiate any declaration as regards the Borrower or any other Guarantor and that in the event of a declaration or attempted declaration, the Guaranteed Liabilities shall immediately become due and payable by each Guarantor for the purposes of this Guarantee.

Section 8.02. Guarantee Absolute. Each Guarantor guarantees that the Guaranteed Liabilities shall be paid strictly in accordance with the terms of this Agreement and the Swap Agreements to which any Secured Party is a party. The liability of each Guarantor hereunder is absolute and unconditional irrespective of: (a) any change in the time, manner or place of payment of, or in any other term of, all or any of the Loan Documents or the Guaranteed Liabilities, or any other amendment or waiver of or any consent to departure from any of the terms of any Loan Document or Guaranteed Liability, including any increase or decrease in the rate of interest thereon; (b) any release or amendment or waiver of, or consent to departure from, any other guaranty or support document, or any exchange, release or non-perfection of any collateral, for all or any of the Loan Documents or Guaranteed Liabilities; (c) any present or future law, regulation or order of any jurisdiction (whether of right or in fact) or of any agency thereof purporting to reduce, amend, restructure or otherwise affect any term of any Loan Document or Guaranteed Liability; (d) without being limited by the foregoing, any lack of validity or enforceability of any Loan Document or Guaranteed Liability; and (e) any other setoff, defense or counterclaim whatsoever (in any case, whether based on contract, tort or any other theory) with respect to the Loan Documents or the transactions contemplated thereby which might constitute a legal or equitable defense available to, or discharge of, the Borrower or a Guarantor.

Section 8.03. Guarantee Irrevocable. This Guarantee is a continuing guaranty of the payment of all Guaranteed Liabilities now or hereafter existing under this Agreement and the Swap Agreements to which any Secured Party is a party, and shall remain in full force and effect until payment in full of all Guaranteed Liabilities and other amounts payable hereunder and until this Agreement and the Swap Agreements are no longer in effect or, if earlier, when the Guarantor has given the Administrative Agent written notice that this Guarantee has been revoked; provided that any notice under this Section shall not release the revoking Guarantor from any Guaranteed Liability, absolute or contingent, existing prior to the Administrative Agent’s actual receipt of the notice at its branches or departments responsible for this Agreement and the Swap Agreements and reasonable opportunity to act upon such notice.

Section 8.04. Reinstatement. This Guarantee shall continue to be effective or be reinstated, as the case may be, if at any time any payment of any of the Guaranteed Liabilities is rescinded or must otherwise be returned by the Administrative Agent, any Lender or any Lender Counterparty on the insolvency, bankruptcy or reorganization of the Borrower, or any other Credit Party, or otherwise, all as though the payment had not been made.

Section 8.05. Subrogation. No Guarantor shall exercise any rights which it may acquire by way of subrogation, by any payment made under this Guarantee or otherwise, until all the Guaranteed Liabilities have been paid in full and this Agreement and the Swap Agreements are no longer in effect. If any amount is paid to the Guarantor on account of subrogation rights under this Guarantee at any time when all the Guaranteed Liabilities have not been paid in full, the amount shall be held in trust for the benefit of the Secured Parties and shall be promptly paid to the Administrative Agent to be credited and applied to the Guaranteed Liabilities, whether matured or unmatured or absolute or contingent, in accordance with the terms of this Agreement and the Swap Agreements. If any Guarantor makes payment to any Secured Party of all or any part of the Guaranteed Liabilities and all the Guaranteed Liabilities are paid in full and this Agreement and the Swap Agreements are no longer in effect, the Administrative Agent, Lenders and Lender Counterparties shall, at such Guarantor’s request, execute and deliver to such Guarantor appropriate documents, without recourse and without representation or warranty, necessary to evidence the transfer by subrogation to such Guarantor of an interest in the Guaranteed Liabilities resulting from the payment.

Section 8.06. Subordination. Without limiting the rights of the Administrative Agent, the Lenders and the Lender Counterparties under any other agreement, any liabilities owed by the Borrower to any Guarantor in connection with any extension of credit or financial accommodation by any Guarantor to or for the account of the Borrower, including but not limited to interest accruing at the agreed contract rate after the commencement of a bankruptcy or similar proceeding, are hereby subordinated to the Guaranteed Liabilities, and such liabilities of the Borrower to such Guarantor, if the Administrative Agent so requests, shall be collected, enforced and received by any Guarantor as trustee for the Administrative Agent and shall be paid over to the Administrative Agent on account of the Guaranteed Liabilities but without reducing or affecting in any manner the liability of the Guarantor under the other provisions of this Guarantee.

Section 8.07. Payments Generally. All payments by the Guarantors shall be made in the manner, at the place and in the currency (the “Payment Currency”) required by the Loan Documents and the Swap Agreement, as the case may be; provided, however, that (if the Payment Currency is other than Dollars) any Guarantor may, at its option (or, if for any reason whatsoever any Guarantor is unable to effect payments in the foregoing manner, such Guarantor shall be obligated to) pay to the Administrative Agent at its principal office the equivalent amount in Dollars computed at the selling rate of the Administrative Agent or a selling rate chosen by the Administrative Agent, most recently in effect on or prior to the date the Guaranteed Liability becomes due, for cable transfers of the Payment Currency to the place where the Guaranteed Liability is payable. In any case in which any Guarantor makes or is obligated to make payment in Dollars, the Guarantor shall hold the Administrative Agent, the Lenders and the Lender Counterparties harmless from any loss incurred by the Administrative Agent, any Lender or any Lender Counterparty arising from any change in the value of Dollars in relation to the Payment Currency between the date the Guaranteed Liability becomes due and the date the Administrative Agent, such Lender or such Lender Counterparty is actually able, following the conversion of the Dollars paid by such Guarantor into the Payment Currency and remittance of such Payment Currency to the place where such Guaranteed Liability is payable, to apply such Payment Currency to such Guaranteed Liability.

Section 8.08. Setoff. Each Guarantor agrees that, in addition to (and without limitation of) any right of setoff, banker’s lien or counterclaim the Administrative Agent, any Lender or any Lender Counterparty may otherwise have, the Administrative Agent, such Lender or such Lender Counterparty shall be entitled, at its option, to offset balances (general or special, time or demand, provisional or final) held by it for the account of any Guarantor at any office of the Administrative Agent, such Lender or such Lender Counterparty, in Dollars or in any other currency, against any amount payable by such Guarantor under this Guarantee which is not paid when due (regardless of whether such balances are then due to such Guarantor), in which case it shall promptly notify such Guarantor thereof; provided that the failure of the Administrative Agent, such Lender, or such Lender Counterparty to give such notice shall not affect the validity thereof.

Section 8.09. Formalities. Each Guarantor waives presentment, notice of dishonor, protest, notice of acceptance of this Guarantee or incurrence of any Guaranteed Liability and any other formality with respect to any of the Guaranteed Liabilities or this Guarantee.

Section 8.10. Limitations on Guarantee. The provisions of the Guarantee under this Article VIII are severable, and in any action or proceeding involving any state corporate law, or any state, federal or foreign bankruptcy, insolvency, reorganization or other law affecting the rights of creditors generally, if the obligations of any Guarantor under this Guarantee would otherwise be held or determined to be avoidable, invalid or unenforceable on account of the amount of such Guarantor’s liability under this Guarantee, then, notwithstanding any other provision of this Guarantee to the contrary, the amount of such liability shall, without any further action by the Guarantors, the Administrative Agent, any Lender or any Lender Counterparty, be automatically limited and reduced to the highest amount that is valid and enforceable as determined in such action or proceeding (such highest amount determined hereunder being the relevant Guarantor’s “Maximum Liability”). This Section 8.10 with respect to the Maximum Liability of the Guarantors is intended solely to preserve the rights of the Administrative Agent, Lenders and Lender Counterparties hereunder to the maximum extent not subject to avoidance under applicable law, and no Guarantor nor any other Person shall have any right or claim under this Section 8.10 with respect to the Maximum Liability, except to the extent necessary so that none of the obligations of any Guarantor hereunder shall not be rendered voidable under applicable law.

Article IX

Events of Default

If any of the following events (each an “Event of Default” and collectively, the “Events of Default”) shall occur:

(a) the Borrower shall fail to pay any principal of any Loan (including any payments required under Section 2.11) or any reimbursement obligation in respect of any LC Disbursement when and as the same shall become due and payable, whether at the due date thereof or at a date fixed for prepayment thereof or otherwise;

(b) the Borrower shall fail to pay any interest on any Loan or any fee or any other amount (other than an amount referred to in clause (a) of this Article) payable under this Agreement, when and as the same shall become due and payable, and such failure shall continue unremedied for a period of five days;

(c) any representation or warranty made or deemed made by or on behalf of the Borrower, any Restricted Subsidiary or any Sponsored Partnership in or in connection with this Agreement or any amendment or modification hereof or waiver hereunder, or in any report, certificate, financial statement or other document furnished pursuant to or in connection with this Agreement or any amendment or modification hereof or waiver hereunder or in any Loan Document furnished pursuant to or in connection with this Agreement or any amendment or modification thereof or waiver hereunder, shall prove to have been incorrect in any material respect when made or deemed made and such materiality is continuing;

(d) the Borrower or any Restricted Subsidiary shall fail to observe or perform any covenant, condition or agreement contained in Section 2.11, Section 6.02, Section 6.03 (with respect to the Borrower, any Restricted Subsidiary’s or any Sponsored Partnership’s existence), Section 6.05 (with respect to insurance), Section 6.08, or in Article VII;

(e) the Borrower or any Restricted Subsidiary shall fail to observe or perform any covenant, condition or agreement contained in this Agreement (other than those specified in clause (a), (b) or (d) of this Article) or any Loan Document, and such failure shall continue unremedied for a period of 30 days after receipt of written notice thereof from the Administrative Agent to the Borrower (which notice will be given at the request of any Lender);

(f) the Borrower or any Restricted Subsidiary shall fail to make any payment (whether of principal or interest and regardless of amount) in respect of any Material Indebtedness, when and as the same shall become due and payable and such failure shall continue beyond the applicable grace period, if any.

(g) any event or condition occurs that results in any Material Indebtedness becoming due prior to its scheduled maturity or that enables or permits (with or without the giving of notice, the lapse of time or both) the holder or holders of any Material Indebtedness or any trustee or agent on its or their behalf to cause any Material Indebtedness to become due, or to require the prepayment, repurchase, redemption or defeasance thereof, prior to its scheduled maturity; provided that this clause (g) shall not apply to (i) secured Indebtedness that becomes due as a result of the voluntary sale or transfer of the property or assets securing such Indebtedness and (ii) Indebtedness that becomes due as a result of a change in law, tax regulation or accounting treatment so long as such Indebtedness is paid when due;

(h) an involuntary proceeding shall be commenced or an involuntary petition shall be filed seeking (i) liquidation, reorganization or other relief in respect of the Borrower, any Restricted Subsidiary or any Sponsored Partnership or its debts, or of a substantial part of its assets, under any Federal, state or foreign bankruptcy, insolvency, receivership or similar law now or hereafter in effect or (ii) the appointment of a receiver, trustee, custodian, sequestrator, conservator or similar official for the Borrower, any Restricted Subsidiary or any Sponsored Partnership or for a substantial part of its assets, and, in any such case, such proceeding or petition shall continue undismissed for 60 days or an order or decree approving or ordering any of the foregoing shall be entered;

(i) the Borrower, any Restricted Subsidiary or any Sponsored Partnership shall (i) voluntarily commence any proceeding or file any petition seeking liquidation, reorganization or other relief under any Federal, state or foreign bankruptcy, insolvency, receivership or similar law now or hereafter in effect, (ii) consent to the institution of, or fail to contest in a timely and appropriate manner, any proceeding or petition described in clause (h) of this Article, (iii) apply for or consent to the appointment of a receiver, trustee, custodian, sequestrator, conservator or similar official for the Borrower, any Restricted Subsidiary or any Sponsored Partnership or for a substantial part of its assets, (iv) file an answer admitting the material allegations of a petition filed against it in any such proceeding, (v) make a general assignment for the benefit of creditors or (vi) take any action for the purpose of effecting any of the foregoing;

(j) the Borrower or any Restricted Subsidiary shall become unable, admit in writing its inability or fail generally to pay its debts as they become due;

(k) one or more judgments for the payment of money in an aggregate amount in excess of $15,000,000 shall be rendered against the Borrower, any Restricted Subsidiary or any Sponsored Partnership or any combination thereof and either the same shall remain undischarged or unsatisfied for a period of 30 consecutive days during which execution shall not be effectively stayed, or any action shall be legally taken by a judgment creditor to attach or levy upon any assets of the Borrower or any Restricted Subsidiary or any Sponsored Partnership to enforce any such judgment;

(l) an ERISA Event shall have occurred that, in the opinion of the Majority Lenders, when taken together with all other ERISA Events that have occurred, could reasonably be expected to result in a Material Adverse Effect;

(m) the delivery by any Guarantor to the Administrative Agent of written notice that a Guarantee under Article VIII has been revoked; or

(n) a Change of Control shall occur;

then, and in every such event (other than an event with respect to the Borrower, any Restricted Subsidiary or any Sponsored Partnership described in clause (h) or (i) of this Article), and at any time thereafter during the continuance of such event, the Administrative Agent may, and at the request of the Majority Lenders shall, by notice to the Borrower, take either or both of the following actions, at the same or different times:  (i) terminate the Aggregate Commitment, and thereupon the Aggregate Commitment shall terminate immediately, and (ii) declare the Loans then outstanding to be due and payable in whole (or in part, in which case any principal not so declared to be due and payable may thereafter be declared to be due and payable), and thereupon the principal of the Loans so declared to be due and payable, together with accrued interest thereon and all fees and other obligations of the Borrower accrued hereunder, shall become due and payable immediately, without presentment, demand, protest or other notice of any kind, all of which are hereby waived by the Borrower; and in case of any event with respect to the Borrower described in clause (h) or (i) of this Article, the Aggregate Commitment shall automatically terminate and the principal of the Loans then outstanding, together with accrued interest thereon and all fees and other obligations of the Borrower accrued hereunder, shall automatically become due and payable, without presentment, demand, protest or other notice of any kind, all of which are hereby waived by the Borrower. Without limiting the foregoing, upon the occurrence and during the continuance of an Event of Default, the Administrative Agent, the Issuing Bank and each Lender may protect and enforce its rights under this Agreement and the other Loan Documents by any appropriate proceedings, including proceedings for specific performance of any covenant or agreement contained in this Agreement or any other Loan Document, and the Administrative Agent, the Issuing Bank and each Lender may enforce payment of any Obligations due and payable hereunder or enforce any other legal or equitable right and remedies which it may have under this Agreement, any other Loan Document, or under applicable law or in equity.

Article X

The Administrative Agent

Each of the Lenders and the Issuing Bank hereby irrevocably appoints the Administrative Agent as its agent and authorizes the Administrative Agent to take such actions on its behalf and to exercise such powers as are delegated to the Administrative Agent by the terms hereof, together with such actions and powers as are reasonably incidental thereto.

The bank serving as the Administrative Agent hereunder shall have the same rights and powers in its capacity as a Lender as any other Lender and may exercise the same as though it were not the Administrative Agent, and such bank and its Affiliates may accept deposits from, lend money to and generally engage in any kind of business with any Credit Party or other Affiliate thereof as if it were not the Administrative Agent hereunder.

The Administrative Agent shall not have any duties or obligations except those expressly set forth herein. Without limiting the generality of the foregoing, (a) the Administrative Agent shall not be subject to any fiduciary or other implied duties, regardless of whether a Default has occurred and is continuing, (b) the Administrative Agent shall not have any duty to take any discretionary action or exercise any discretionary powers, except discretionary rights and powers expressly contemplated hereby that the Administrative Agent is required to exercise in writing as directed by the Majority Lenders (or such other number or percentage of the Lenders as shall be necessary under the circumstances as provided in Section 11.02), and (c) except as expressly set forth herein, the Administrative Agent shall not have any duty to disclose, and shall not be liable for the failure to disclose, any information relating to any Credit Party that is communicated to or obtained by the bank serving as Administrative Agent or any of its Affiliates in any capacity. The Administrative Agent shall not be liable for any action taken or not taken by it with the consent or at the request of the Majority Lenders (or such other number or percentage of the Lenders as shall be necessary under the circumstances as provided in Section 11.02) or in the absence of its own gross negligence or willful misconduct. The Administrative Agent shall be deemed not to have knowledge of any Default unless and until written notice thereof is given to the Administrative Agent by the Borrower or a Lender, and the Administrative Agent shall not be responsible for or have any duty to ascertain or inquire into (i) any statement, warranty or representation made in or in connection with this Agreement, (ii) the contents of any certificate, report or other document delivered hereunder or in connection herewith, (iii) the performance or observance of any of the covenants, agreements or other terms or conditions set forth herein, (iv) the validity, enforceability, effectiveness or genuineness of this Agreement or any other agreement, instrument or document, or (v) the satisfaction of any condition set forth in Article V or elsewhere herein, other than to confirm receipt of items expressly required to be delivered to the Administrative Agent. No Person identified as a Syndication Agent, Co-Documentation Agent or Co-Lead Arranger, in each case in its respective capacity as such, shall have any responsibilities or duties, or incur any liability, under this Agreement or the other Loan Documents.

The Administrative Agent shall be entitled to rely upon, and shall not incur any liability for relying upon, any notice, request, certificate, consent, statement, instrument, document or other writing believed by it to be genuine and to have been signed or sent by the proper Person. The Administrative Agent also may rely upon any statement made to it orally or by telephone and believed by it to be made by the proper Person, and shall not incur any liability for relying thereon. The Administrative Agent may consult with legal counsel (who may be counsel for the Borrower), independent accountants and other experts selected by it, and shall not be liable for any action taken or not taken by it in accordance with the advice of any such counsel, accountants or experts.

The Administrative Agent may perform any and all its duties and exercise its rights and powers by or through any one or more sub-agents appointed by the Administrative Agent. The Administrative Agent and any such sub-agent may perform any and all its duties and exercise its rights and powers through their respective Related Parties. The exculpatory provisions of the preceding paragraphs shall apply to any such sub-agent and to the Related Parties of the Administrative Agent and any such sub-agent, and shall apply to their respective activities in connection with the syndication of the credit facilities provided for herein as well as activities as Administrative Agent.

Subject to the appointment and acceptance of a successor Administrative Agent as provided in this paragraph, the Administrative Agent may resign at any time by notifying the Lenders, the Issuing Bank and the Borrower. Upon any such resignation, the Majority Lenders shall have the right, with the consent of the Borrower (which consent shall not be unreasonably withheld or delayed), to appoint a successor; provided that no consent of the Borrower shall be required if any Event of Default has occurred and is continuing. If no successor shall have been so appointed by the Majority Lenders and shall have accepted such appointment within 30 days after the retiring Administrative Agent gives notice of its resignation, then the retiring Administrative Agent may, on behalf of the Lenders and the Issuing Bank, appoint a successor Administrative Agent which shall be a bank with an office in Chicago, Illinois or New York, New York, or an Affiliate of any such bank. Upon the acceptance of its appointment as Administrative Agent hereunder by a successor, such successor shall succeed to and become vested with all the rights, powers, privileges and duties of the retiring Administrative Agent, and the retiring Administrative Agent shall be discharged from its duties and obligations hereunder. The fees payable by the Borrower to a successor Administrative Agent shall be the same as those payable to its predecessor unless otherwise agreed between the Borrower and such successor. After the Administrative Agent’s resignation hereunder, the provisions of this Article and Section 11.03 shall continue in effect for the benefit of such retiring Administrative Agent, its sub-agents and their respective Related Parties in respect of any actions taken or omitted to be taken by any of them while it was acting as Administrative Agent.

Each Lender acknowledges that it has, independently and without reliance upon the Administrative Agent or any other Lender and based on such documents and information as it has deemed appropriate, made its own credit analysis and decision to enter into this Agreement. Each Lender also acknowledges that it will, independently and without reliance upon the Administrative Agent or any other Lender and based on such documents and information as it shall from time to time deem appropriate, continue to make its own decisions in taking or not taking action under or based upon this Agreement, any related agreement or any document furnished hereunder or thereunder.

Each Lender and the Issuing Bank hereby authorizes the Administrative Agent to release any Collateral that it is permitted to be sold or released pursuant to the terms of the Loan Documents. Each Lender and the Issuing Bank hereby authorizes the Administrative Agent to execute and deliver to the Borrower, at the Borrower’s sole cost and expense, any and all releases of Liens, termination statements, assignments or other documents reasonably requested by the Borrower in connection with any Disposition of Collateral to the extent such Disposition is permitted by the terms of Section 7.03 or is otherwise authorized by the terms of the Loan Documents.

Article XI

Miscellaneous

Section 11.01. Notices.

(a) Except in the case of notices and other communications expressly permitted to be given by telephone (and subject to paragraph (b) below), all notices and other communications provided for herein shall be in writing and shall be delivered by hand or overnight courier service, mailed by certified or registered mail or sent by telecopy, as follows:

(i) if to the Borrower, to Petroleum Development Corporation, 1775 Sherman St., Suite 3000, Denver, CO 80203 Attention: Chief Financial Officer, Telecopy No.  ###-###-####;

(ii) if to the Administrative Agent or Issuing Bank, to JPMorgan Chase Bank, N.A., Mail Code IL1-0010, 10 South Dearborn, Floor 07, Chicago, Illinois, 60603-2003, Telecopy No.: (312)  ###-###-####, Attention: Claudia A. Kech, with a copy to JPMorgan Chase Bank, N.A., Mail Code TX2-S038, 712 Main Street, 8^th Floor, Houston, Texas 77002, Telecopy No. (713)  ###-###-####, Attention: Jo Linda Papadakis;

(iii) if to the Syndication Agent, Co-Documentation Agent, Co-Lead Arranger or any Lender, to its address (or telecopy number) set forth in its Administrative Questionnaire.

(b) Notices and other communications to the Lenders hereunder may be delivered or furnished by electronic communications pursuant to procedures approved by the Administrative Agent; provided that the foregoing shall not apply to notices pursuant to Article II unless otherwise agreed by the Administrative Agent and the applicable Lender. The Administrative Agent or the Borrower may, in their discretion, agree to accept notices and other communications to it hereunder by electronic communications pursuant to procedures approved by it; provided that approval of such procedures may be limited to particular notices or communications.

(c) Any party hereto may change its address or telecopy number for notices and other communications hereunder by notice to the other parties hereto. All notices and other communications given to any party hereto in accordance with the provisions of this Agreement shall be deemed to have been given on the date of receipt.

Section 11.02. Waivers; Amendments.

(a) No failure or delay by the Administrative Agent, the Issuing Bank or any Lender in exercising any right or power hereunder shall operate as a waiver thereof, nor shall any single or partial exercise of any such right or power, or any abandonment or discontinuance of steps to enforce such a right or power, preclude any other or further exercise thereof or the exercise of any other right or power. The rights and remedies of the Administrative Agent, the Issuing Bank and the Lenders hereunder are cumulative and are not exclusive of any rights or remedies that they would otherwise have. No waiver of any provision of this Agreement or consent to any departure by the Borrower therefrom shall in any event be effective unless the same shall be permitted by paragraph (b) of this Section, and then such waiver or consent shall be effective only in the specific instance and for the purpose for which given. Without limiting the generality of the foregoing, the making of a Loan or issuance of a Letter of Credit shall not be construed as a waiver of any Default, regardless of whether the Administrative Agent, any Lender or the Issuing Bank may have had notice or knowledge of such Default at the time.

(b) Neither this Agreement nor any provision hereof may be waived, amended or modified except pursuant to an agreement or agreements in writing entered into by the Credit Parties and the Majority Lenders or by the Credit Parties and the Administrative Agent with the consent of the Majority Lenders; provided that no such agreement shall

(i) increase the Borrowing Base without the written consent of each Lender;

(ii) increase the Commitment of any Lender or, except as set forth in the definition of Applicable Percentage, increase the Applicable Percentage of any Lender, in each case, without the written consent of such Lender;

(iii) increase the Maximum Facility Amount without the written consent of each Lender;

(iv) reduce the principal amount of any Loan or LC Disbursement or reduce the rate of interest thereon, or reduce any fees payable hereunder, without the written consent of each Lender affected thereby;

(v) postpone the scheduled date of payment of the principal amount of any Loan or LC Disbursement, or any interest thereon, or any fees payable hereunder, or reduce the amount of, waive or excuse any such payment, or postpone the scheduled date of expiration of any of the Aggregate Commitment, without the written consent of each Lender affected thereby (it being understood that waiver of a mandatory prepayment of the Loans or a mandatory reduction of the Commitments shall not constitute a postponement or waiver of a scheduled payment or date of expiration);

(vi) change Section 2.18(b) or Section 2.18(c) in a manner that would alter the pro rata sharing of payments required thereby, without the written consent of each Lender;

(vii) except in connection with any Dispositions permitted in Section 7.03, release any Credit Party from its obligations under the Loan Documents or release any of the Collateral without the written consent of each Lender; or

(viii) change any of the provisions of this Section or the definition of “Majority Lenders”, “Required Lenders” or any other provision hereof specifying the number or percentage of Lenders required to waive, amend or modify any rights hereunder or make any determination or grant any consent hereunder, without the written consent of each Lender;

provided further that no such agreement shall (x) amend, modify or otherwise affect the rights or duties of the Administrative Agent or the Issuing Bank hereunder without the prior written consent of the Administrative Agent or the Issuing Bank, as the case may be or (y) change any of the provisions of Section 2.20 without the prior written consent of the Administrative Agent and the Issuing Bank.

Section 11.03. Expenses; Indemnity; Damage Waiver.

(a) The Borrower shall pay (i) all reasonable out-of-pocket expenses incurred by the Administrative Agent and its Affiliates, including the reasonable fees, charges and disbursements of counsel for the Administrative Agent, in connection with the syndication of the credit facilities provided for herein, the preparation and administration of this Agreement and the other Loan Documents or any amendments, modifications or waivers of the provisions hereof (whether or not the transactions contemplated hereby or thereby shall be consummated), (ii) all reasonable out-of-pocket expenses incurred by the Issuing Bank in connection with the issuance, amendment, renewal or extension of any Letter of Credit or any demand for payment thereunder and (iii) all reasonable out-of-pocket expenses incurred by the Administrative Agent, the Issuing Bank or any Lender, including the fees, charges and disbursements of any counsel for the Administrative Agent, the Issuing Bank or any Lender, in connection with the enforcement or protection of its rights in connection with this Agreement, including its rights under this Section, or in connection with the Loans made or Letters of Credit issued hereunder, including all such out-of-pocket expenses incurred during any workout, restructuring or negotiations in respect of such Loans or Letters of Credit.

(b) THE CREDIT PARTIES SHALL INDEMNIFY THE ADMINISTRATIVE AGENT, THE CO-LEAD ARRANGERS, THE ISSUING BANK AND EACH LENDER, AND EACH RELATED PARTY OF ANY OF THE FOREGOING PERSONS (EACH SUCH PERSON BEING CALLED AN “INDEMNITEE”) AGAINST, AND HOLD EACH INDEMNITEE HARMLESS FROM, ANY AND ALL LOSSES, CLAIMS, DAMAGES, LIABILITIES AND RELATED EXPENSES, INCLUDING THE FEES, CHARGES AND DISBURSEMENTS OF ANY COUNSEL FOR ANY INDEMNITEE, INCURRED BY OR ASSERTED AGAINST ANY INDEMNITEE ARISING OUT OF, IN CONNECTION WITH, OR AS A RESULT OF (I) THE EXECUTION OR DELIVERY OF THIS AGREEMENT OR ANY AGREEMENT OR INSTRUMENT CONTEMPLATED HEREBY, THE PERFORMANCE BY THE PARTIES HERETO OF THEIR RESPECTIVE OBLIGATIONS HEREUNDER OR THE CONSUMMATION OF THE TRANSACTIONS OR ANY OTHER TRANSACTIONS CONTEMPLATED HEREBY, (II) ANY LOAN OR LETTER OF CREDIT OR THE USE OF THE PROCEEDS THEREFROM (INCLUDING ANY REFUSAL BY THE ISSUING BANK TO HONOR A DEMAND FOR PAYMENT UNDER A LETTER OF CREDIT IF THE DOCUMENTS PRESENTED IN CONNECTION WITH SUCH DEMAND DO NOT STRICTLY COMPLY WITH THE TERMS OF SUCH LETTER OF CREDIT), (III) ANY ACTUAL OR ALLEGED PRESENCE OR RELEASE OF HAZARDOUS MATERIALS ON OR FROM ANY PROPERTY OWNED OR OPERATED BY THE BORROWER OR ANY RESTRICTED SUBSIDIARY, OR ANY ENVIRONMENTAL LIABILITY RELATED IN ANY WAY TO THE BORROWER OR ANY RESTRICTED SUBSIDIARY, OR (IV) ANY ACTUAL OR PROSPECTIVE CLAIM, LITIGATION, INVESTIGATION OR PROCEEDING RELATING TO ANY OF THE FOREGOING, WHETHER BASED ON CONTRACT, TORT OR ANY OTHER THEORY AND REGARDLESS OF WHETHER ANY INDEMNITEE IS A PARTY THERETO; PROVIDED THAT SUCH INDEMNITY SHALL NOT, AS TO ANY INDEMNITEE, BE AVAILABLE TO THE EXTENT THAT SUCH LOSSES, CLAIMS, DAMAGES, LIABILITIES OR RELATED EXPENSES ARE DETERMINED BY A COURT OF COMPETENT JURISDICTION BY FINAL AND NONAPPEALABLE JUDGMENT TO HAVE RESULTED FROM THE GROSS NEGLIGENCE OR WILLFUL MISCONDUCT OF SUCH INDEMNITEE OR FROM A CLAIM BROUGHT BY A CREDIT PARTY AGAINST SUCH INDEMNITEE FOR BREACH IN BAD FAITH OF SUCH INDEMNITEE’S OBLIGATIONS UNDER THIS AGREEMENT OR ANY OTHER LOAN DOCUMENTS. FOR THE AVOIDANCE OF DOUBT, WITH RESPECT TO THE FOREGOING PROVISO “ANY INDEMNITEE” MEANS ONLY THE INDEMNITEE OR INDEMNITEES, AS THE CASE MAY BE, THAT ARE DETERMINED BY SUCH COURT TO HAVE BEEN GROSSLY NEGLIGENT OR TO HAVE ENGAGED IN WILLFUL MISCONDUCT OR BREACHED THIS AGREEMENT OR ANY OTHER LOAN DOCUMENT IN BAD FAITH AND NOT ANY OTHER INDEMNITEE.

(c) To the extent that any Credit Party fails to pay any amount required to be paid by it to the Administrative Agent or the Issuing Bank under paragraph (a) or (b) of this Section, each Lender severally agrees to pay to the Administrative Agent or the Issuing Bank, as the case may be, such Lender’s Applicable Percentage of such unpaid amount with respect to amounts to be paid to the Issuing Bank and such Lender’s Applicable Percentage of such unpaid amount with respect to amounts to be paid to the Administrative Agent (in each case, determined as of the time that the applicable unreimbursed expense or indemnity payment is sought); provided that the unreimbursed expense or indemnified loss, claim, damage, liability or related expense, as the case may be, was incurred by or asserted against the Administrative Agent or the Issuing Bank in its capacity as such.

(d) To the extent permitted by applicable law, the Credit Parties shall not assert, and hereby waive, any claim against any Indemnitee, on any theory of liability, for special, indirect, consequential or punitive damages (as opposed to direct or actual damages) arising out of, in connection with, or as a result of, this Agreement or any agreement or instrument contemplated hereby, the Transactions, any Loan or Letter of Credit or the use of the proceeds thereof.

(e) All amounts due under this Section shall be payable not later than 10 days after written demand therefor.

Section 11.04. Successors and Assigns.

(a) The provisions of this Agreement shall be binding upon and inure to the benefit of the parties hereto and their respective successors and assigns permitted hereby (including any Affiliate of the Issuing Bank that issues any Letter of Credit), except that (i) no Credit Party may assign or otherwise transfer any of its rights or obligations hereunder without the prior written consent of each Lender (and any attempted assignment or transfer by such Credit Party without such consent shall be null and void) and (ii) no Lender may assign or otherwise transfer its rights or obligations hereunder except in accordance with this Section. Nothing in this Agreement, expressed or implied, shall be construed to confer upon any Person (other than the parties hereto, their respective successors and assigns permitted hereby (including any Affiliate of the Issuing Bank that issues any Letter of Credit), Participants (to the extent provided in paragraph (c) of this Section) and, to the extent expressly contemplated hereby, the Related Parties of each of the Administrative Agent, the Issuing Bank and the Lenders) any legal or equitable right, remedy or claim under or by reason of this Agreement.

(b)

(i) Subject to the conditions set forth in paragraph (b)(ii) below, any Lender may assign to one or more assignees all or a portion of its rights and obligations under this Agreement (including all or a portion of its Commitment and the Loans at the time owing to it) with the prior written consent (such consent not to be unreasonably withheld) of:

(A) the Borrower, provided that no consent of the Borrower shall be required for an assignment to a Lender, an Affiliate of a Lender, a Federal Reserve Bank, an Approved Fund or, if an Event of Default has occurred and is continuing, any other assignee;

(B) the Administrative Agent; and

(C) the Issuing Bank.

(ii) Assignments shall be subject to the following additional conditions:

(A) except in the case of an assignment to a Lender, an Affiliate of a Lender, an Approved Fund or an assignment of the entire remaining amount of the assigning Lender’s Commitment or Loans, the amount of the Commitment or Loans of the assigning Lender subject to each such assignment (determined as of the date the Assignment and Assumption with respect to such assignment is delivered to the Administrative Agent) shall not be less than $5,000,000 unless each of the Borrower and the Administrative Agent otherwise consent, provided that no such consent of the Borrower shall be required if an Event of Default has occurred and is continuing;

(B) each partial assignment shall be made as an assignment of a proportionate part of all the assigning Lender’s rights and obligations in respect of such Lender’s Commitment and such Lender’s Loans under this Agreement;

(C) the parties to each assignment shall execute and deliver to the Administrative Agent an Assignment and Assumption, together with a processing and recordation fee of $3,500; and

(D) the assignee, if it shall not be a Lender, shall deliver to the Administrative Agent an Administrative Questionnaire.

For the purposes of this Section 11.04(b), the term “Approved Fund” has the following meaning:

“Approved Fund” means any Person (other than a natural person) that is engaged in making, purchasing, holding or investing in bank loans and similar extensions of credit in the ordinary course of its business and that is administered or managed by (a) a Lender, (b) an Affiliate of a Lender or (c) an entity or an Affiliate of an entity that administers or manages a Lender.

(iii) Subject to acceptance and recording thereof pursuant to paragraph (b)(iv) of this Section, from and after the effective date specified in each Assignment and Assumption the assignee thereunder shall be a party hereto and, to the extent of the interest assigned by such Assignment and Assumption, have the rights and obligations of a Lender under this Agreement, and the assigning Lender thereunder shall, to the extent of the interest assigned by such Assignment and Assumption, be released from its obligations under this Agreement (and, in the case of an Assignment and Assumption covering all of the assigning Lender’s rights and obligations under this Agreement, such Lender shall cease to be a party hereto but shall continue to be entitled to the benefits of Section 2.15, Section 2.16, Section 2.17 and Section 11.03). Any assignment or transfer by a Lender of rights or obligations under this Agreement that does not comply with this Section 11.04 shall be treated for purposes of this Agreement as a sale by such Lender of a participation in such rights and obligations in accordance with paragraph (c) of this Section except that any attempted assignment or transfer by any Lender that does not comply with clause (C) of Section 11.04(b)(ii) shall be null and void.

(iv) The Administrative Agent, acting for this purpose as an agent of the Borrower, shall maintain at one of its offices a copy of each Assignment and Assumption delivered to it and a register for the recordation of the names and addresses of the Lenders, and the Commitment and Applicable Percentage of, and principal amount of the Loans and LC Disbursements owing to, each Lender pursuant to the terms hereof from time to time (the “Register”). The entries in the Register shall be conclusive, and the Credit Parties, the Administrative Agent, the Issuing Bank and the Lenders may treat each Person whose name is recorded in the Register pursuant to the terms hereof as a Lender hereunder for all purposes of this Agreement, notwithstanding notice to the contrary. The Register shall be available for inspection by the Credit Parties, the Issuing Bank and any Lender, at any reasonable time and from time to time upon reasonable prior notice.

(v) Upon its receipt of a duly completed Assignment and Assumption executed by an assigning Lender and an assignee, the assignee’s completed Administrative Questionnaire (unless the assignee shall already be a Lender hereunder), the processing and recordation fee referred to in paragraph (b) of this Section any written consent to such assignment required by paragraph (b) of this Section, the Administrative Agent shall accept such Assignment and Assumption and record the information contained therein in the Register; provided that if either the assigning Lender or the assignee shall have failed to make any payment required to be made by it pursuant to Section 2.06(d) or Section 2.06(e), Section 2.07, Section 2.18(d) or Section 11.03(c), the Administrative Agent shall have no obligation to accept such Assignment and Assumption and record the information therein in the Register unless and until such payment shall have been made in full, together with all accrued interest thereon. No assignment shall be effective for purposes of this Agreement unless it has been recorded in the Register as provided in this paragraph.

(c)

(i) Any Lender may, without the consent of the Borrower, the Administrative Agent or the Issuing Bank, sell participations to one or more banks or other entities (a “Participant”) in all or a portion of such Lender’s rights and obligations under this Agreement (including all or a portion of its Commitment and the Loans owing to it); provided that (A) such Lender’s obligations under this Agreement shall remain unchanged, (B) such Lender shall remain solely responsible to the other parties hereto for the performance of such obligations and (C) the Borrower, the Administrative Agent, the Issuing Bank and the other Lenders shall continue to deal solely and directly with such Lender in connection with such Lender’s rights and obligations under this Agreement. Any agreement or instrument pursuant to which a Lender sells such a participation shall provide that such Lender shall retain the sole right to enforce this Agreement and to approve any amendment, modification or waiver of any provision of this Agreement; provided that such agreement or instrument may provide that such Lender will not, without the consent of the Participant, agree to any amendment, modification or waiver described in the first proviso to Section 11.02(b) that affects such Participant. Subject to paragraph (c)(ii) of this Section, the Borrower agrees that each Participant shall be entitled to the benefits of Section 2.15, Section 2.16 and Section 2.17 to the same extent as if it were a Lender and had acquired its interest by assignment pursuant to paragraph (b) of this Section. To the extent permitted by law, each Participant also shall be entitled to the benefits of Section 11.08 as though it were a Lender, provided such Participant agrees to be subject to Section 2.18(c) as though it were a Lender.

(ii) A Participant shall not be entitled to receive any greater payment under Section 2.15 or Section 2.17 than the applicable Lender would have been entitled to receive with respect to the participation sold to such Participant, unless the sale of the participation to such Participant is made with the prior written consent of the Borrower. A Participant that would be a Foreign Lender if it were a Lender shall not be entitled to the benefits of Section 2.17 unless the Borrower is notified of the participation sold to such Participant and such Participant agrees, for the benefit of the Borrower, to comply with Section 2.17(e) as though it were a Lender.

(d) Any Lender may at any time pledge or assign a security interest in all or any portion of its rights under this Agreement to secure obligations of such Lender, including without limitation any pledge or assignment to secure obligations to a Federal Reserve Bank, and this Section shall not apply to any such pledge or assignment of a security interest; provided that no such pledge or assignment of a security interest shall release a Lender from any of its obligations hereunder or substitute any such pledgee or assignee for such Lender as a party hereto.

Section 11.05. Survival. All covenants, agreements, representations and warranties made by the Credit Parties herein and in the certificates or other instruments delivered in connection with or pursuant to this Agreement shall be considered to have been relied upon by the other parties hereto and shall survive the execution and delivery of this Agreement and the making of any Loans and issuance of any Letters of Credit, regardless of any investigation made by any such other party or on its behalf and notwithstanding that the Administrative Agent, the Issuing Bank or any Lender may have had notice or knowledge of any Default or incorrect representation or warranty at the time any credit is extended hereunder, and shall continue in full force and effect as long as the principal of or any accrued interest on any Loan or any fee or any other amount payable under this Agreement is outstanding and unpaid or any Letter of Credit is outstanding and so long as the Aggregate Commitment has not expired or terminated. The provisions of Section 2.15, Section 2.16, Section 2.17 and Section 11.03 and Article X shall survive and remain in full force and effect regardless of the consummation of the transactions contemplated hereby, the repayment of the Loans, the expiration or termination of the Letters of Credit and the Aggregate Commitment or the termination of this Agreement or any provision hereof.

Section 11.06. Counterparts; Integration; Effectiveness. This Agreement may be executed in counterparts (and by different parties hereto on different counterparts), each of which shall constitute an original, but all of which when taken together shall constitute a single contract. This Agreement and any separate letter agreements with respect to fees payable to the Administrative Agent constitute the entire contract among the parties relating to the subject matter hereof and supersede any and all previous agreements and understandings, oral or written, relating to the subject matter hereof. THIS AGREEMENT AND THE OTHER LOAN DOCUMENTS REPRESENT THE FINAL AGREEMENT AMONG THE PARTIES AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS, OR SUBSEQUENT ORAL AGREEMENTS OF THE PARTIES. THERE ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE PARTIES. Except as provided in Section 5.01, this Agreement shall become effective when it shall have been executed by the Administrative Agent and when the Administrative Agent shall have received counterparts hereof which, when taken together, bear the signatures of each of the other parties hereto, and thereafter shall be binding upon and inure to the benefit of the parties hereto and their respective successors and assigns. Delivery of an executed counterpart of a signature page of this Agreement by telecopy shall be effective as delivery of a manually executed counterpart of this Agreement.

Section 11.07. Severability. Any provision of this Agreement held to be invalid, illegal or unenforceable in any jurisdiction shall, as to such jurisdiction, be ineffective to the extent of such invalidity, illegality or unenforceability without affecting the validity, legality and enforceability of the remaining provisions hereof; and the invalidity of a particular provision in a particular jurisdiction shall not invalidate such provision in any other jurisdiction.

Section 11.08. Right of Setoff. If an Event of Default shall have occurred and be continuing, each Lender and each of its Affiliates is hereby authorized at any time and from time to time, to the fullest extent permitted by law, to set off and apply any and all deposits (general or special, time or demand, provisional or final) at any time held and other obligations at any time owing by such Lender or Affiliate to or for the credit or the account of the Borrower against any of and all the obligations of any Credit Party now or hereafter existing under this Agreement held by such Lender, irrespective of whether or not such Lender shall have made any demand under this Agreement and although such obligations may be unmatured. The rights of each Lender under this Section and Section 8.08 are in addition to other rights and remedies (including other rights of setoff) which such Lender may have.

Section 11.09. GOVERNING LAW; JURISDICTION; CONSENT TO SERVICE OF PROCESS.

(a) THIS AGREEMENT SHALL BE CONSTRUED IN ACCORDANCE WITH AND GOVERNED BY THE LAW OF THE STATE OF NEW YORK WITHOUT REGARD TO CONFLICTS OF LAW PRINCIPLES THEREOF.

(b) EACH CREDIT PARTY HEREBY IRREVOCABLY AND UNCONDITIONALLY SUBMITS, FOR ITSELF AND ITS PROPERTY, TO THE NONEXCLUSIVE JURISDICTION OF ANY UNITED STATES FEDERAL OR NEW YORK STATE COURT SITTING IN NEW YORK, NEW YORK IN ANY ACTION OR PROCEEDING ARISING OUT OF OR RELATING TO THIS AGREEMENT, OR FOR RECOGNITION OR ENFORCEMENT OF ANY JUDGMENT, AND EACH OF THE PARTIES HERETO HEREBY IRREVOCABLY AND UNCONDITIONALLY AGREES THAT ALL CLAIMS IN RESPECT OF ANY SUCH ACTION OR PROCEEDING MAY BE HEARD AND DETERMINED IN SUCH NEW YORK STATE OR, TO THE EXTENT PERMITTED BY LAW, IN SUCH FEDERAL COURT. EACH OF THE PARTIES HERETO AGREES THAT A FINAL JUDGMENT IN ANY SUCH ACTION OR PROCEEDING SHALL BE CONCLUSIVE AND MAY BE ENFORCED IN OTHER JURISDICTIONS BY SUIT ON THE JUDGMENT OR IN ANY OTHER MANNER PROVIDED BY LAW. NOTHING IN THIS AGREEMENT SHALL AFFECT ANY RIGHT THAT THE ADMINISTRATIVE AGENT, THE ISSUING BANK OR ANY LENDER MAY OTHERWISE HAVE TO BRING ANY ACTION OR PROCEEDING RELATING TO THIS AGREEMENT AGAINST ANY CREDIT PARTY OR ITS PROPERTIES IN THE COURTS OF ANY JURISDICTION.

(c) EACH CREDIT PARTY HEREBY IRREVOCABLY AND UNCONDITIONALLY WAIVES, TO THE FULLEST EXTENT IT MAY LEGALLY AND EFFECTIVELY DO SO, ANY OBJECTION WHICH IT MAY NOW OR HEREAFTER HAVE TO THE LAYING OF VENUE OF ANY SUIT, ACTION OR PROCEEDING ARISING OUT OF OR RELATING TO THIS AGREEMENT IN ANY COURT REFERRED TO IN PARAGRAPH (B) OF THIS SECTION. EACH OF THE PARTIES HERETO HEREBY IRREVOCABLY WAIVES, TO THE FULLEST EXTENT PERMITTED BY LAW, THE DEFENSE OF AN INCONVENIENT FORUM TO THE MAINTENANCE OF SUCH ACTION OR PROCEEDING IN ANY SUCH COURT.

(d) EACH PARTY TO THIS AGREEMENT IRREVOCABLY CONSENTS TO SERVICE OF PROCESS IN THE MANNER PROVIDED FOR NOTICES IN SECTION 11.01. NOTHING IN THIS AGREEMENT WILL AFFECT THE RIGHT OF ANY PARTY TO THIS AGREEMENT TO SERVE PROCESS IN ANY OTHER MANNER PERMITTED BY LAW.

Section 11.10. WAIVER OF JURY TRIAL. EACH PARTY HERETO HEREBY WAIVES, TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, ANY RIGHT IT MAY HAVE TO A TRIAL BY JURY IN ANY LEGAL PROCEEDING DIRECTLY OR INDIRECTLY ARISING OUT OF OR RELATING TO THIS AGREEMENT OR THE TRANSACTIONS CONTEMPLATED HEREBY (WHETHER BASED ON CONTRACT, TORT OR ANY OTHER THEORY). EACH PARTY HERETO (A) CERTIFIES THAT NO REPRESENTATIVE, AGENT OR ATTORNEY OF ANY OTHER PARTY HAS REPRESENTED, EXPRESSLY OR OTHERWISE, THAT SUCH OTHER PARTY WOULD NOT, IN THE EVENT OF LITIGATION, SEEK TO ENFORCE THE FOREGOING WAIVER AND (B) ACKNOWLEDGES THAT IT AND THE OTHER PARTIES HERETO HAVE BEEN INDUCED TO ENTER INTO THIS AGREEMENT BY, AMONG OTHER THINGS, THE MUTUAL WAIVERS AND CERTIFICATIONS IN THIS SECTION.

Section 11.11. Headings. Article and Section headings and the Table of Contents used herein are for convenience of reference only, are not part of this Agreement and shall not affect the construction of, or be taken into consideration in interpreting, this Agreement.

Section 11.12. Confidentiality. Each of the Administrative Agent, the Issuing Bank and the Lenders agrees to maintain the confidentiality of the Information (as defined below), except that Information may be disclosed (a) to its and its Affiliates’ directors, officers, employees and agents, including accountants, legal counsel and other advisors (it being understood that the Persons to whom such disclosure is made will be informed of the confidential nature of such Information and instructed to keep such Information confidential), (b) to the extent requested by any regulatory authority having jurisdiction over any Lender, (c) to the extent required by applicable laws or regulations or by any subpoena or similar legal process, (d) to any other party to this Agreement, (e) in connection with the exercise of any remedies hereunder or any suit, action or proceeding relating to this Agreement or the enforcement of rights hereunder, (f) subject to an agreement containing provisions substantially the same as those of this Section, to (i) any assignee of or Participant in, or any prospective assignee of or Participant in, any of its rights or obligations under this Agreement or (ii) any actual or prospective counterparty (or its advisors) to any swap or derivative transaction relating to the Credit Parties and their obligations,

(g) with the consent of the Borrower or (h) to the extent such Information (i) becomes publicly available other than as a result of a breach of this Section or (ii) becomes available to the Administrative Agent, the Issuing Bank or any Lender on a nonconfidential basis from a source other than a Credit Party. For the purposes of this Section, “Information” means all information received from any Credit Party relating to any Credit Party or its business, other than any such information that is available to the Administrative Agent, the Issuing Bank or any Lender on a nonconfidential basis prior to disclosure by any Credit Party; provided that, in the case of information received from any Credit Party after the date hereof, such information is clearly identified at the time of delivery as confidential. Any Person required to maintain the confidentiality of Information as provided in this Section shall be considered to have complied with its obligation to do so if such Person has exercised the same degree of care to maintain the confidentiality of such Information as such Person would accord to its own confidential information.

Section 11.13. Interest Rate Limitation. Notwithstanding anything herein to the contrary, if at any time the interest rate applicable to any Loan, together with all fees, charges and other amounts which are treated as interest on such Loan under applicable law (collectively the “Charges”), shall exceed the maximum lawful rate (the “Maximum Rate”) which may be contracted for, charged, taken, received or reserved by the Lender holding such Loan in accordance with applicable law, the rate of interest payable in respect of such Loan hereunder, together with all Charges payable in respect thereof, shall be limited to the Maximum Rate and, to the extent lawful, the interest and Charges that would have been payable in respect of such Loan but were not payable as a result of the operation of this Section shall be cumulated and the interest and Charges payable to such Lender in respect of other Loans or periods shall be increased (but not above the Maximum Rate therefor) until such cumulated amount, together with interest thereon at the Federal Funds Effective Rate to the date of repayment, shall have been received by such Lender. In the event that, notwithstanding Section 11.09, applicable law is the law of the State of Texas and such applicable law provides for an interest ceiling under Chapter 303 of the Texas Finance Code (the “Texas Finance Code”) as amended, for each day, the ceiling shall be the “weekly ceiling” as defined in the Texas Finance Code and shall be used in this Note and the other Loan Documents for calculating the Maximum Rate and for all other purposes. Chapter 346 of the Texas Finance Code (which regulates certain revolving credit accounts (formerly Tex. Rev. Civ. Stat. Ann. Art. 5069, Ch. 15)) shall not apply to this Agreement or to any Loan, nor shall this Agreement or any Loan be governed by or be subject to the provisions of such Chapter 346 in any manner whatsoever.

Section 11.14. USA PATRIOT Act. Each Lender that is subject to the requirements of the USA Patriot Act (Title III of Pub. L. 107-56 (signed into law October 26, 2001)) (the “Act”) hereby notifies each Credit Party that pursuant to the requirements of the Act, it is required to obtain, verify and record information that identifies each Credit Party, which information includes the name and address of each Credit Party and other information that will allow such Lender to identify each Credit Party in accordance with the Act.

Section 11.15. Original Credit Agreement. Upon the Effective Date, this Agreement shall supersede and replace in its entirety the Original Credit Agreement; provided, however, that (i) all loans, letters of credit, and other indebtedness, obligations and liabilities outstanding under the Original Credit Agreement on such date shall continue to constitute Loans, Letters of Credit and other indebtedness, obligations and liabilities under this Agreement, (ii) the execution and delivery of this Agreement or any of the Loan Documents hereunder shall not constitute a novation, refinancing or any other fundamental change in the relationship among the parties and (iii) the Loans, Letters of Credit, and other indebtedness, obligations and liabilities outstanding hereunder, to the extent outstanding under the Original Credit Agreement immediately prior to the date hereof, shall constitute the same loans, letters of credit, and other indebtedness, obligations and liabilities as were outstanding under the Original Credit Agreement.

Section 11.16. Reaffirmation and Grant of Security Interest. Each Credit Party hereby (a) confirms that each Security Instrument (as defined in the Original Credit Agreement) to which it is a party or is otherwise bound and all Collateral encumbered thereby, will continue to guarantee or secure, as the case may be, to the fullest extent possible in accordance with the Loan Documents, the payment and performance of all Obligations and Guaranteed Liabilities under this Agreement and the Secured Indebtedness (as such term is defined in the Mortgages) and all other indebtedness, obligations and liabilities under the Mortgages, as the case may be, and (b) reaffirms its grant to the Administrative Agent for the benefit of the Secured Parties of a continuing Lien on and security interest in and to such Credit Party’s right, title and interest in, to and under all Collateral as collateral security for the prompt payment and performance in full when due of the Obligations and Guaranteed Liabilities under this Agreement and the Secured Indebtedness and all other indebtedness, obligations and liabilities under the Mortgages (whether at stated maturity, by acceleration or otherwise) in accordance with the terms thereof.

Section 11.17. Reallocation of Commitments and Loans. The Lenders party to the Original Credit Agreement have agreed among themselves to reallocate their respective Revolving Commitments (as defined in the Original Credit Agreement) as contemplated by this Agreement, and to, among other things, allow certain financial institutions identified by the Co-Lead Arrangers in consultation with the Borrower, to become a party to this Agreement as a Lender (each, a “New Lender”) by acquiring an interest in the Aggregate Commitment. On the Effective Date and after giving effect to such reallocation and adjustment of the Aggregate Commitment, the Commitment and Applicable Percentage of each Lender, including each New Lender, shall be as set forth on Schedule 2.01 and each Lender, including each New Lender, shall own its Applicable Percentage of the outstanding Loans. The reallocation and adjustment to the Commitments of each Lender, including each New Lender, as contemplated by this Section 11.17 shall be deemed to have been consummated pursuant to the terms of the Assignment and Assumption attached as Exhibit A hereto as if each of the Lenders, including each New Lender, had executed an Assignment and Assumption with respect to such reallocation and adjustment. The Borrower and the Administrative Agent hereby consent to such reallocation and adjustment of the Commitments and each New Lender’s acquisition of an interest in the Aggregate Commitment. The Administrative Agent hereby waives the $3,500 processing and recordation fee set forth in Section 11.04(b)(ii)(C) with respect to the assignments and reallocations of the Commitments contemplated by this Section 11.17. To the extent requested by any Lender, and in accordance with Section 2.16, the Borrower shall pay to such Lender, within the time period prescribed by Section 2.16, any amounts required to be paid by the Borrower under Section 2.16 in the event the payment of any principal of any Eurodollar Loan or the conversion of any Eurodollar Loan other than on the last day of an Interest Period applicable thereto is required in connection with the reallocation contemplated by this Section 11.17.

[Signature Page Follows]

IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be duly executed by their respective authorized officers as of the day and year first above written.

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EXHIBIT A

ASSIGNMENT AND ASSUMPTION

This Assignment and Assumption (the “Assignment and Assumption”) is dated as of the Effective Date set forth below and is entered into by and between [Insert name of Assignor] (the “Assignor”) and [Insert name of Assignee] (the “Assignee”). Capitalized terms used but not defined herein shall have the meanings given to them in the Credit Agreement identified below (as amended, the “Credit Agreement”), receipt of a copy of which is hereby acknowledged by the Assignee. The Standard Terms and Conditions set forth in Annex 1 attached hereto are hereby agreed to and incorporated herein by reference and made a part of this Assignment and Assumption as if set forth herein in full.

For an agreed consideration, the Assignor hereby irrevocably sells and assigns to the Assignee, and the Assignee hereby irrevocably purchases and assumes from the Assignor, subject to and in accordance with the Standard Terms and Conditions and the Credit Agreement, as of the Effective Date inserted by the Administrative Agent as contemplated below (i) all of the Assignor’s rights and obligations in its capacity as a Lender under the Credit Agreement and any other documents or instruments delivered pursuant thereto to the extent related to the amount and percentage interest identified below of all of such outstanding rights and obligations of the Assignor under the respective facilities identified below (including any letters of credit and guarantees included in such facilities) and (ii) to the extent permitted to be assigned under applicable law, all claims, suits, causes of action and any other right of the Assignor (in its capacity as a Lender) against any Person, whether known or unknown, arising under or in connection with the Credit Agreement, any other documents or instruments delivered pursuant thereto or the loan transactions governed thereby or in any way based on or related to any of the foregoing, including contract claims, tort claims, malpractice claims, statutory claims and all other claims at law or in equity related to the rights and obligations sold and assigned pursuant to clause (i) above (the rights and obligations sold and assigned pursuant to clauses (i) and (ii) above being referred to herein collectively as the “Assigned Interest”). Such sale and assignment is without recourse to the Assignor and, except as expressly provided in this Assignment and Assumption, without representation or warranty by the Assignor.

1.		Assignor:
2.		Assignee:
				[and is an Affiliate/Approved Fund of [identify Lender]]
3.		Borrower:		Petroleum Development Corporation
4.		Administrative Agent:		JPMorgan Chase Bank, N.A., as the administrative agent under the Credit Agreement
5.		Credit Agreement:		Second Amended and Restated Credit Agreement, dated as of November 5, 2010 among Petroleum Development Corporation, as Borrower, certain Subsidiaries of Borrower, as Guarantors, the Lenders parties thereto, and JPMorgan Chase Bank, N.A., as Administrative Agent

6.		Assigned Interest:

Aggregate

Amount of

Applicable

Commitment/Loans

Commitment/Loans

Percentage of

Facility Assigned

for all Lenders

Assigned

Commitment/Loans

$

$

%

$

$

%

$

$

%

Effective Date:                            , 20     

The terms set forth in this Assignment and Assumption are hereby agreed to:

[Consented to and] Accepted:
JPMORGAN CHASE BANK, N.A. as Administrative Agent and Issuing Bank
By:
		Title:
[Consented to:]
PETROLEUM DEVELOPMENT CORPORATION
By:
		Title

ANNEX 1

Second Amended and Restated Credit Agreement dated as of November 5, 2010 among Petroleum Development Corporation, as Borrower, certain Subsidiaries of Borrower, as Guarantors, the Lenders party thereto and JPMorgan Chase Bank, N.A., as Administrative Agent.

STANDARD TERMS AND CONDITIONS FOR
ASSIGNMENT AND ASSUMPTION

1. Representations and Warranties.

1.1 Assignor. The Assignor (a) represents and warrants that (i) it is the legal and beneficial owner of the Assigned Interest, (ii) the Assigned Interest is free and clear of any lien, encumbrance or other adverse claim and (iii) it has full power and authority, and has taken all action necessary, to execute and deliver this Assignment and Assumption and to consummate the transactions contemplated hereby; and (b) assumes no responsibility with respect to (i) any statements, warranties or representations made in or in connection with the Credit Agreement or any other Loan Document, (ii) the execution, legality, validity, enforceability, genuineness, sufficiency or value of the Loan Documents or any collateral thereunder, (iii) the financial condition of the Borrower, any Subsidiary or Affiliates or any other Person obligated in respect of any Loan Document or (iv) the performance or observance by the Borrower, any Subsidiary or Affiliates or any other Person of any of their respective obligations under any Loan Document.

1.2. Assignee. The Assignee (a) represents and warrants that (i) it has full power and authority, and has taken all action necessary, to execute and deliver this Assignment and Assumption and to consummate the transactions contemplated hereby and to become a Lender under the Credit Agreement, (ii) it satisfies the requirements, if any, specified in the Credit Agreement that are required to be satisfied by it in order to acquire the Assigned Interest and become a Lender, (iii) from and after the Effective Date, it shall be bound by the provisions of the Credit Agreement as a Lender thereunder and, to the extent of the Assigned Interest, shall have the obligations of a Lender thereunder, (iv) it has received a copy of the Credit Agreement, together with copies of the most recent financial statements delivered pursuant to Section 6.01 thereof, as applicable, and such other documents and information as it has deemed appropriate to make its own credit analysis and decision to enter into this Assignment and Assumption and to purchase the Assigned Interest on the basis of which it has made such analysis and decision independently and without reliance on the Administrative Agent or any other Lender, and (v) if it is a Foreign Lender, attached to the Assignment and Assumption is any documentation required to be delivered by it pursuant to the terms of the Credit Agreement, duly completed and executed by the Assignee; and (b) agrees that (i) it will, independently and without reliance on the Administrative Agent, the Assignor or any other Lender, and based on such documents and information as it shall deem appropriate at the time, continue to make its own credit decisions in taking or not taking action under the Loan Documents, and (ii) it will perform in accordance with their terms all of the obligations which by the terms of the Loan Documents are required to be performed by it as a Lender.

2. Payments. From and after the Effective Date, the Administrative Agent shall make all payments in respect of the Assigned Interest (including payments of principal, interest, fees and other amounts) to the Assignor for amounts which have accrued to but excluding the Effective Date and to the Assignee for amounts which have accrued from and after the Effective Date.

3. General Provisions. This Assignment and Assumption shall be binding upon, and inure to the benefit of, the parties hereto and their respective successors and assigns. This Assignment and Assumption may be executed in any number of counterparts, which together shall constitute one instrument. Delivery of an executed counterpart of a signature page of this Assignment and Assumption by telecopy or other electronic means shall be effective as delivery of a manually executed counterpart of this Assignment and Assumption. This Assignment and Assumption shall be governed by, and construed in accordance with, the law of the State of New York.

EXHIBIT B

OPINION OF COUNSEL FOR THE BORROWER

[See attached]

EXHIBIT C

COUNTERPART AGREEMENT

This COUNTERPART AGREEMENT, dated [                    ] (this “Counterpart Agreement”) is delivered pursuant to that certain Second Amended and Restated Credit Agreement, dated as of November 5, 2010 (as it may be amended, supplemented or otherwise modified, the “Credit Agreement”; the terms defined therein and not otherwise defined herein being used herein as therein defined), by and among Petroleum Development Corporation, as Borrower, certain Subsidiaries of Borrower, as Guarantors, the Lenders party thereto, and JPMorgan Chase Bank, N.A., as Administrative Agent (the “Administrative Agent”).

Section 1. Pursuant to Section 6.13 of the Credit Agreement, the undersigned hereby:

(a) agrees that this Counterpart Agreement may be attached to the Credit Agreement and that by the execution and delivery hereof, the undersigned becomes a Guarantor under the Credit Agreement and agrees to be bound by all of the terms thereof;

(b) represents and warrants that each of the representations and warranties set forth in the Credit Agreement and each other Loan Document and applicable to the undersigned is true and correct both before and after giving effect to this Counterpart Agreement, except to the extent that any such representation and warranty relates solely to any earlier date, in which case such representation and warranty is true and correct as of such earlier date (if applicable to the undersigned);

(c) certifies that no event has occurred or is continuing as of the date hereof, or will result from the transactions contemplated hereby on the date hereof, that would constitute an Event of Default or a Default;

(d) agrees to irrevocably and unconditionally guaranty the due and punctual payment in full of all Obligations when the same shall become due, whether at stated maturity, by required prepayment, declaration, acceleration, demand or otherwise (including amounts that would become due but for the operation of the automatic stay under Section 362(a) of the Bankruptcy Code, 11 U.S.C. § 362(a)) and in accordance with Article VIII of the Credit Agreement; and

(e) (i) agrees that this counterpart may also be attached to the Security Agreement, (ii) agrees that the undersigned will comply with all the terms and conditions of the Security Agreement as if it were an original signatory thereto, (iii) grants to the Administrative Agent a security interest in all of the undersigned’s right, title and interest in and to all “Collateral” (as such term is defined in the Security Agreement) of the undersigned, in each case whether now or hereafter existing or in which the undersigned now has or hereafter acquires an interest and wherever the same may be located and (iv) delivers to the Administrative Agent supplements to all schedules attached to the Security Agreement. All such Collateral shall be deemed to be part of the “Collateral” and hereafter subject to each of the terms and conditions of the Security Agreement.

Section 2. The undersigned agrees from time to time, upon request of Administrative Agent, to take such additional actions and to execute and deliver such additional documents and instruments as Administrative Agent may request to effect the transactions contemplated by, and to carry out the intent of, this Counterpart Agreement. Neither this Counterpart Agreement nor any term hereof may be changed, waived, discharged or terminated, except by an instrument in writing signed by the party (including, if applicable, any party required to evidence its consent to or acceptance of this Counterpart Agreement) against whom enforcement of such change, waiver, discharge or termination is sought. Any notice or other communication herein required or permitted to be given shall be given in pursuant to Section 11.01 of the Credit Agreement, and for all purposes thereof, the notice address of the undersigned shall be the address as set forth on the signature page hereof. In case any provision in or obligation under this Agreement shall be invalid, illegal or unenforceable in any jurisdiction, the validity, legality and enforceability of the remaining provisions or obligations, or of such provision or obligation in any other jurisdiction, shall not in any way be affected or impaired thereby.

THIS AGREEMENT SHALL BE GOVERNED BY, AND SHALL BE CONSTRUED AND ENFORCED IN ACCORDANCE WITH, THE INTERNAL LAWS OF THE STATE OF NEW YORK, WITHOUT REGARD TO CONFLICT OF LAWS PRINCIPLES THEREOF.

IN WITNESS WHEREOF, the undersigned has caused this Counterpart Agreement to be duly executed and delivered by its duly authorized officer as of the date above first written.

Address for Notices:

                                        

                                        

                                        
Attention:
Telecopier

with a copy to:

                                        

                                        

                                        
Attention:
Telecopier

ACKNOWLEDGED AND ACCEPTED,
as of the date above first written:

JPMORGAN CHASE BANK, N.A.,
as Administrative Agent

By:
		Name:
		Title:

EXHIBIT D

FORM OF INTEREST ELECTION REQUEST

Reference is made to the Second Amended and Restated Credit Agreement, dated as of November 5, 2010 (as it may be amended, supplemented or otherwise modified, the “Credit Agreement”; the terms defined therein and not otherwise defined herein being used herein as therein defined), by and among Petroleum Development Corporation, as Borrower, certain Subsidiaries of Borrower, as Guarantors, the Lenders party thereto, and JPMorgan Chase Bank, N.A., as Administrative Agent.

Pursuant to Section 2.08 of the Credit Agreement, the Borrower desires to convert or to continue the following Loans, each such conversion and/or continuation to be effective as of [mm/dd/yy]:

$	[___,___,___]			Eurodollar Loans to be continued with Interest Period of ____ month(s)
$	[___,___,___]			ABR Loans to be converted to Eurodollar Loans with Interest Period of ____ month(s)
$	[___,___,___]			Eurodollar Loans to be converted to ABR Loans

The Borrower hereby certifies that as of the date hereof, no event has occurred and is continuing or would result from the consummation of the conversion and/or continuation contemplated hereby that would constitute a Default.

EXHIBIT E

NOTE

New York, New York		,

FOR VALUE RECEIVED, the undersigned PETROLEUM DEVELOPMENT CORPORATION, a Nevada corporation (“Borrower”) hereby unconditionally promises to pay to the order of                                          (the “Lender”) the principal sum equal to its Commitment as set forth in the Credit Agreement (as hereinafter defined), or, if greater or less, the aggregate unpaid principal amount of the Loans advanced by Lender to Borrower pursuant to the terms of the Credit Agreement, together with interest on the unpaid principal balance thereof as set forth in the Credit Agreement, both principal and interest payable as therein provided in lawful money of the United States of America at the offices of Administrative Agent provided in Section 11.01 of the Credit Agreement, or at such other place, as from time to time may be designated by Administrative Agent in accordance with the Credit Agreement.

The principal and all accrued interest on this Note shall be due and payable in accordance with the terms and provisions of the Credit Agreement.

This Note is executed pursuant to that certain Second Amended and Restated Credit Agreement dated as of November 5, 2010, between Borrower, certain Subsidiaries of the Borrower, as Guarantors, the Administrative Agent and Lenders (as amended, modified, supplemented or restated from time to time, the “Credit Agreement”; the terms defined therein and not otherwise defined herein being used herein as therein defined), is one of the promissory notes referred to in Section 2.09(e) therein and is secured by the Security Instruments. Reference is made to the Credit Agreement and the Loan Documents for a statement of prepayment rights and obligations of Borrower, for a statement of the terms and conditions under which the due date of this Note may be accelerated and for statements regarding other matters affecting this Note (including without limitation the obligations of the holder hereof to advance funds hereunder, principal and interest payment due dates, voluntary and mandatory prepayments, exercise of rights and remedies, payment of attorneys’ fees, court costs and other costs of collection and certain waivers by Borrower and others now or hereafter obligated for payment of any sums due hereunder). Upon the occurrence of an Event of Default, the Administrative Agent may declare forthwith to be entirely and immediately due and payable the principal balance hereof and the interest accrued hereon, and the Lender shall have all rights and remedies of the Lender under the Credit Agreement and the other Loan Documents. This Note may be prepaid in accordance with the terms and provisions of the Credit Agreement.

Regardless of any provision contained in this Note, the holder hereof shall never be entitled to receive, collect or apply, as interest on this Note, any amount in excess of the Maximum Rate, and, if the holder hereof ever receives, collects, or applies as interest, any such amount which would be excessive interest, it shall be deemed a partial prepayment of principal and treated hereunder as such; and, if the indebtedness evidenced hereby is paid in full, any remaining excess shall forthwith be paid to Borrower. In determining whether or not the interest paid or payable, under any specific contingency, exceeds the Maximum Rate, Borrower and the holder hereof shall, to the maximum extent permitted under applicable law (i) characterize any non-principal payment as an expense, fee or premium rather than as interest, (ii) exclude voluntary prepayments and the effects thereof, and (iii) spread the total amount of interest throughout the entire contemplated term of the obligations evidenced by this Note and/or referred to in the Credit Agreement so that the interest rate is uniform throughout the entire term of this Note; provided that, if this Note is paid and performed in full prior to the end of the full contemplated term thereof; and if the interest received for the actual period of existence thereof exceeds the Maximum Rate, the holder hereof shall refund to Borrower the amount of such excess or credit the amount of such excess against the indebtedness evidenced hereby, and, in such event, the holder hereof shall not be subject to any penalties provided by any laws for contracting for, charging, taking, reserving or receiving interest in excess of the Maximum Rate.

If any payment of principal or interest on this Note shall become due on a day other than a Business Day, such payment shall be made on the next succeeding Business Day and such extension of time shall in such case be included in computing interest in connection with such payment.

If this Note is placed in the hands of an attorney for collection, or if it is collected through any legal proceeding at law or in equity or in bankruptcy, receivership or other court proceedings, Borrower agrees to pay all costs of collection, including, but not limited to, court costs and reasonable attorneys’ fees.

Borrower and each surety, endorser, guarantor and other party ever liable for payment of any sums of money payable on this Note, jointly and severally waive presentment and demand for payment, notice of intention to accelerate the maturity, protest, notice of protest and nonpayment, as to this Note and as to each and all installments hereof, and agree that their liability under this Note shall not be affected by any renewal or extension in the time of payment hereof, or in any indulgences, or by any release or change in any security for the payment of this Note, and hereby consent to any and all such renewals, extensions, indulgences, releases or changes.

This Note shall be governed by and construed in accordance with the applicable laws of the United States of America and the laws of the State of New York.

THIS NOTE, THE CREDIT AGREEMENT AND THE OTHER LOAN DOCUMENTS REPRESENT THE FINAL AGREEMENTS AMONG THE PARTIES AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS, OR SUBSEQUENT ORAL AGREEMENTS OF THE PARTIES. THERE ARE NO UNWRITTEN ORAL AGREEMENTS AMONG THE PARTIES.

EXECUTED as of the date and year first above written.

EXHIBIT F

FORM OF LENDER CERTIFICATE

                     , 200     

To:		JPMORGAN CHASE BANK, N.A., as Administrative Agent

The Borrower, the Guarantors, the Administrative Agent and the Lenders have entered into that certain Second Amended and Restated Credit Agreement dated as of November 5, 2010 (as the same has been and may further be amended, restated, supplemented or otherwise modified from time to time, the “Credit Agreement”). Unless otherwise defined herein, capitalized terms used herein have the meaning specified in the Credit Agreement.

[Language for Existing Lender]

[Please be advised that the undersigned has agreed (a) to increase its Commitment under the Credit Agreement effective  _____, 20_____  (the “Effective Date”) from $_____  to $_____  and (b) that, from and after the Effective Date, it shall continue to be a Lender in all respects under the Credit Agreement and the other Loan Documents.]

[Language for New Lender]

[Please be advised that the undersigned has agreed (a) to become a Lender under the Credit Agreement effective  _____, 20_____  (the “Effective Date”) with a Commitment of $_____  and (b) that, from and after the Effective Date, it shall be deemed to be a Lender in all respects under the Credit Agreement and the other Loan Documents and shall be bound thereby.]

Accepted and Agreed:

JPMORGAN CHASE BANK, N.A.,
as Administrative Agent

By:
		Name:
		Title:
Accepted and Agreed:
PETROLEUM DEVELOPMENT CORPORATION
By:
		Name:
		Title:

SCHEDULE 1.01

EXISTING LETTERS OF CREDIT

Letter of

Letter of Credit

Credit #

Applicant

Beneficiary

Amount

Type

Expiration Date

CPCS-796752

Petroleum Development Corporation

DOMINION TRANSMISSION, INC. 445 WEST MAIN STREET

$

18,676,327

Irrevocable Standby L/C

5/22/2012

SCHEDULE 1.01

SCHEDULE 2.01

APPLICABLE PERCENTAGES AND COMMITMENTS

						Applicable
Lender		Title				Percentage				Commitment
JPMorgan Chase Bank, N.A.		Administrative Agent					9.1428571	%		$	32,000,000.00
BNP Paribas		Syndication Agent					8.1428571	%		$	28,500,000.00
Bank of America, N.A.		Co-Documentation Agent					8.1428571	%		$	28,500,000.00
Bank of Montreal		Co-Documentation Agent					8.1428571	%		$	28,500,000.00
The Royal Bank of Scotland plc		Co-Documentation Agent					8.1428571	%		$	28,500,000.00
Compass Bank							8.1428571	%		$	28,500,000.00
Credit Agricole Corporate and Investment Bank							8.1428571	%		$	28,500,000.00
Wells Fargo Bank, N.A.							8.1428571	%		$	28,500,000.00
Bank of Oklahoma							4 ###-###-####	%		$	15,000,000.00
Capital One, N.A.							4 ###-###-####	%		$	15,000,000.00
Comerica Bank							4 ###-###-####	%		$	15,000,000.00
Natixis							4 ###-###-####	%		$	15,000,000.00
Texas Capital Bank, N.A.							4 ###-###-####	%		$	15,000,000.00
U.S. Bank National Association							4 ###-###-####	%		$	15,000,000.00
The Bank of Nova Scotia							4.07142855	%		$	14,250,000.00
Scotiabanc Inc.							4.07142855	%		$	14,250,000.00
TOTAL							100.00	%		$	350,000,000.00

SCHEDULE 2.01

SCHEDULE 4.06

DISCLOSED MATTERS

Gobel et al. v. Petroleum Development Corporation, Case No. 09-C-40 in U.S. District Court, Northern District of West Virginia, filed on January 27, 2009. David W. Gobel, individually and as representative of the class of all similarly situated individuals and entities, filed a lawsuit against the Petroleum Development Corporation (“PDC”) alleging that PDC failed to properly pay royalties (the “Gobel Lawsuit”). The allegations state that PDC improperly deducted certain charges and costs before applying the royalty percentage. Punitive damages are requested in addition to breach of contract, tort and fraud allegations. The stay was in effect as of December 31, 2009 and lapsed in February 2010. On August 31, 2010 the federal judges issued an order remanding the case to the state court.

Colorado Department of Public Health and Environment Matters.

In July 2008, PDC self-reported to the Colorado Department of Public Health and Environment (the “CDPHE”) certain non-compliance with air laws at a compressor station in the Piceance Basin. The CDPHE subsequently initiated a review and inspection of air compliance at the station. In November and December 2009, PDC received related compliance advisories for alleged non-compliance. On May 27, 2010, PDC entered into a settlement agreement providing for a civil penalty of $162,900, which was accrued in prior periods and paid in the second quarter of 2010.

In December 2008, PDC received a Notice of Violation/Cease and Desist Order (the “Notice”) from the CDPHE, related to the stormwater permit for the Garden Gulch Road. PDC manages the private road for Garden Gulch LLC. PDC is one of eight users of this road, all of which are natural gas and oil companies operating in the Piceance region of Colorado. Operating expenses, including this fine, if any, are allocated among the users of the road based upon their respective usage. The Notice alleges a deficient and/or incomplete stormwater management plan, failure to implement best management practices and failure to conduct required permit inspections. The Notice states that a violation could result in civil penalties up to $10,000 per day. PDC’s responses were submitted on February 6, 2009 and April 8, 2009. Commencing in December 2009, PDC entered into negotiations with the CDPHE regarding this Notice and continues to work to bring the matter to closure.

SCHEDULE 4.06

SCHEDULE 4.13

CAPITALIZATION

Borrower:		Petroleum Development Corporation (PDC), a Nevada corporation
Restricted Subsidiaries:		Riley Natural Gas Company, a West Virginia corporation with 500 shares of $1.00 par value capital stock outstanding, owned 100% by PDC
		Unioil, a Nevada corporation with 1,000 shares of $0.01 per value capital stock outstanding, owned 100% by PDC.

PDC Ownership of Sponsored Partnerships as of November 3, 2010

NAME OF PARTNERSHIP		GP				LP				TOTAL
PENNWEST PETROLEUM GROUP 1984 LIMITED PARTNERSHIP			5.00	%			39.06	%			44.06	%
PENNWEST PETROLEUM GROUP 1985-A LIMITED PARTNERSHIP			5.00	%			63.84	%			68.84	%
PETROWEST GAS GROUP 1987-B LIMITED PARTNERSHIP			5.00	%			55.40	%			60.40	%
PDC 1989-A LIMITED PARTNERSHIP			27.50	%			38.35	%			65.85	%
PDC 1989-B LIMITED PARTNERSHIP			20.00	%			35.69	%			55.69	%
PDC 1996-D LIMITED PARTNERSHIP			20.00	%			6.00	%			26.00	%
PDC 1997-D LIMITED PARTNERSHIP			20.00	%			7.80	%			27.80	%
PDC 1998-D LIMITED PARTNERSHIP			20.00	%			6.01	%			26.01	%
PDC 1999-D LIMITED PARTNERSHIP			20.00	%			4.34	%			24.34	%
PDC 2000-B LIMITED PARTNERSHIP			20.00	%			3.58	%			23.58	%
PDC 2000-C LIMITED PARTNERSHIP			20.00	%			1.92	%			21.92	%

SCHEDULE 4.13

NAME OF PARTNERSHIP		GP				LP				TOTAL
PDC 2000-D LIMITED PARTNERSHIP			20.00	%			5.02	%			25.02	%
PDC 2001-A LIMITED PARTNERSHIP			20.00	%			3.21	%			23.21	%
PDC 2001-B LIMITED PARTNERSHIP			20.00	%			3.48	%			23.48	%
PDC 2001-C LIMITED PARTNERSHIP			20.00	%			4.07	%			24.07	%
PDC 2001-D LIMITED PARTNERSHIP			20.00	%			3.22	%			23.22	%
PDC 2002-A LIMITED PARTNERSHIP			20.00	%			1.49	%			21.49	%
PDC 2002-B LIMITED PARTNERSHIP			20.00	%			3.60	%			23.60	%
PDC 2002-C LIMITED PARTNERSHIP			20.00	%			2.34	%			22.34	%
PDC 2002-D LIMITED PARTNERSHIP			20.00	%			7.60	%			27.60	%
PDC 2003-A LIMITED PARTNERSHIP			20.00	%			3.60	%			23.60	%
PDC 2003-B LIMITED PARTNERSHIP			20.00	%			3.15	%			23.15	%
PDC 2003-C LIMITED PARTNERSHIP			20.00	%			2.79	%			22.79	%
PDC 2003-D LIMITED PARTNERSHIP			20.00	%			1.98	%			21.98	%
PDC 2004-A LIMITED PARTNERSHIP			20.00	%			3.35	%			23.35	%
PDC 2004-B LIMITED PARTNERSHIP			20.00	%			1.62	%			21.62	%
PDC 2004-C LIMITED PARTNERSHIP			20.00	%			1.42	%			21.42	%
PDC 2004-D LIMITED PARTNERSHIP			20.00	%			4.11	%			24.11	%
PDC 2005-A LIMITED PARTNERSHIP			20.00	%			1.25	%			21.25	%
PDC 2005-B LIMITED PARTNERSHIP			20.00	%			2.00	%			22.00	%
ROCKIES REGION PRIVATE LIMITED PARTNERSHIP			30.00	%			.24	%			30.24	%
ROCKIES REGION 2006 LIMITED PARTNERSHIP			37.00	%			.18	%			37.18	%
ROCKIES REGION 2007 LIMITED PARTNERSHIP			37.00	%			0.00	%			37.00	%

SCHEDULE 4.13

SCHEDULE 7.01

EXISTING INDEBTEDNESS

None.

SCHEDULE 7.01

SCHEDULE 7.02

EXISTING LIENS

None.

SCHEDULE 7.02

SCHEDULE 7.04

EXISTING INVESTMENTS

None.

SCHEDULE 7.04

SCHEDULE 7.07

TRANSACTIONS WITH AFFILIATES

None.

SCHEDULE 7.07

SCHEDULE 7.08

EXISTING RESTRICTIONS

None.

SCHEDULE 7.08